RCM60

RCM60 BEL | Alldatasheet

Document overview

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• PDF pages: 16

Technical content

Features

• Ultra-wide input voltage range
• Single output voltage
• Overtemperature, overvoltage, overcurrent and short-circuit protection
• 20 ms interruption time (EN50155 Class S3)
• Low inrush current
• Primary shutdown input
• Conformal coated PCB
• Extremely high efficiency and high power density
• Extremely wide ambient temperature range -40 to 70°C
• Dimensions 50 x 32 x 172 mm (1.97 x 1.26 x 6.77 in)
• Compliant to EN50155, EN50121-3-2, EN61373 and AREMA
• Fire & Smoke inspected according EN45545-2 and NFPA 130
• RoHS Compliant
• 5 year warranty Safety approved to the latest edition of IEC62368-1 and CSA/UL 62368-1 Table of Contents

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 2 of 16 RCM60 Series

60 W DC-DC Converters

© 2021 Bel Power Solutions & Protection Model Selection Table 1: Standard models Input voltage Output Power Efficiency 2 Model Options Vi min [V] Vi min [V] Vi cont [V] Vi max [V] Vi max [V] Vo nom [V] Io nom [A] Po nom [W] η min η typ [%] 7.2 8 36 40 12 5.0 60 87 88 12RCM60-12 D, Q, F, K 15 4.0 60 87 88 12RCM60-15 24 2.5 60 87 88 12RCM60-24 14.4 16.8 137.5 154 12 5.0 60 87 88 XRCM60-12 15 4.0 60 87 88 XRCM60-15 24 2.5 60 87 88 XRCM60-24

1 Short time; see table 2 for details

2 Efficiency at TA = 25 °C, Vi nom, Io nom

Operating input voltage Vi cont (continuously): Output power: Nominal output voltage: Auxiliary functions and options: Note: The sequence of options must follow the order above. Note: All models are RoHS-compliant for all six substances.

12 RCM 60 -24 D Q F K

Available combinations of options: RCM60-xx (K) RCM60-xxD (K) RCM60-xxDF (K) RCM60-xxDQ (K) RCM60-xxDQF (K) Example: XRCM60-24DQFK: DC-DC converter, input voltage range 16.8 to 137.5 V continuously, output providing 24 V / 2.5 A, monitoring relay, shutdown input, interruption time 20 ms, integrated ORing FET, pluggable connectors, operating ambient temperature TA= –40 to 70 °C, RoHS-compliant for all six substances. Product Marking Type designation, applicable safety approval and recognition marks, CE mark, pin allocation, and product logo. Input voltage range and input current, nominal output voltage and current, degree of protection, batch no., serial no., and data code including production site, version (modification status) and date of production.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 3 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Functional Description The converters are designed with two stage topology having a booster at input followed by an active clamp forward converter with a switching frequency of approximately 140 kHz. The built-in high-efficient input filter together with an inrush limiter circuit ensures very low inrush current of short duration. An antiparallel diode acts as reverse polarity protection together with the external circuit breaker or fuse. The circuitry providing the 20 ms ride through time is located after the input filter and booster stage. The rectification on the secondary side is provided by rectifier diodes. The output voltage control logic is located on the secondary side and influences the primary logic and PWM control circuit. An output ORing FET is available (option Q) for use in a redundant power system architecture. If there are no external circuit breakers, it is possible to order the converter with incorporated fuse (option F). Because this fuse is not accessible, a serial FET provides reverse polarity protection (only with option F). Option D encompasses an output voltage monitor by a solid state relay. Vi– Vi+ Isolation Vo– Vo+ Primary BIAS Cy SD Cy Cy PE Opt. Q Fuse (option F) Primary control logic ¹ Serial FET, only fitted with opt. F ² Bipolar suppressor diode with opt. F Output filter OK2 NTC OK1 Secondary BIAS Secondary control logic Opt. D Boost conv. Holdup Input filter Fig. 1 Block diagram

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 4 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Electrical Input Data General conditions: - TA = 25 °C, unless TC is specified. Table 2: Input data of RCM60 models Model 12RCM60 XRCM60 Unit Characteristics Conditions min typ max min typ max Vi cont Operating input voltage continuous Io = 0 – Io nom TC min – TC max 8 36 16.8 137.5 VVi 2s for ≤ 100 ms without shutdown 7.2 40 14.4 154 Vi nom Nominal input voltage 12, (24) (24), (36), (72), (96), 110 Vi abs Input voltage limits 2 s without damage 0 45 0 160 Ii Maximum input current Vi min, Io nom 10.5 5 A Pi 0 No-load input power Vi min – Vi max, Io = 0 6 6 W Pi SD Idle input power Vi min – Vi max, VSD = 0 V 1.5 1.5 Ci Input capacitance 1 520 40 µF Ri Input resistance 100 100 mΩ Iinr p Peak inrush current Vi = Vi max, Po nom 30 15 A tinr d Duration of inrush current 0.5 0.5 ms ton Start-up time 0 → Vi min, Po nom 1000 1000 Start-up time after removal of shutdown Vi min, Po nom VSD = 0 → 5 V 500 500

1 Not smoothed by the inrush current limiter at start-up (for inrush current calculation)

Input Transient and Reverse Polarity Protection A suppressor diode, varistor and a symmetrical input filter form an effective protection against input transients, which typically occur in many installations, but especially in battery-driven mobile applications. If the input voltage has the wrong polarity, the incorporated antiparallel diode causes the external input circuit breaker or fuse to trip. With option F (incorporated fuse), an active reverse-polarity protection circuit prevents from any damage. Input Under-/Overvoltage Lockout If the input voltage is out of range, an internally generated inhibit signal dis ables the converter to avoid any damage. Inrush Current and Stability with Long Supply Lines The converter operates with relatively small input capacitance Ci resulting in low inrush current of short duration. If a converter is connected to the power source through supply lines with reasonable length (<50 m), no additional measures are necessary to ensure stable operation. Only in the case of very long supply lines exhibiting a con siderable inductance Lext, an additional external capacitor Cext connected across the input pins improves the stability and prevents oscillations; see fig. 2. Vi+ Vi– Vo+ Vo– Lext Rext Cext Load Ci ri ConverterRi Fig. 2 Input configuration

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 5 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Efficiency The efficiency depends on the model and on the input voltage. 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficiency [%] Load 16.8 Vdc 24 Vdc 110 Vdc 137.5 Vdc 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Efficiency [%] Load

8 Vdc 12 Vdc 24 Vdc 36 Vdc

Fig. 3a Efficiency versus Vi and Po (XRCM60-24DQF) Fig. 3b Efficiency versus Vi and Po (12RCM60-24) Primary Shutdown (SD) The output of the converter may be enabled or disabled by a logic signal (e.g. CMOS) applied between the shutdown pin SD and SD0 (= Vi–). If the shutdown function is not re quired, pin SD can be left open-circuit. Voltage on pin SD: Converter operating: 12 to 154 V (XRCM), 8 to 40 V (12RCM) or open-circuit Converter disabled: –2 to +2 V Note: In systems consisting of several converters, this feature may be used to control the activation sequence by logic signals or to enable the power source to start up, before full load is applied. SD 0.1 Vo/Vo nom ton tf t off tr td on Fig. 4a Typical output response to the SD-signal. Interruption Time The interruption time thu is specified in the railway standard EN 50155:2017 clause 5.1.1.4: It is tested at the nominal battery voltage for interruption and short-circuit of the input. After such an event, the system is ready for another such event after 10 s. For XRCM60 thu = 20 ms (Class S3) For 12RCM60 thu = 10 ms (Class S2) - Valid for 24 V input.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 6 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection 0.1 Vo /Vo nom ton tr thu td on Vi Fig. 4b Typical output response to Vi . Electrical Output Data General conditions: - TA = 25 °C, unless TC is specified. Table 3: Output data of RCM60 models. Output 12 V 15 V 24 V Unit Characteristics Conditions min typ max min typ max min typ max V Vow Worst case output voltage Vi min – Vi max TC min – TC max, 0 - Io nom Vo droop Output voltage droop - 20 - 30 - 40 mV/A Vo L Overvoltage shutdown 5 14 17.5 28 V Io nom Nominal output current 5 4 2.5 A vo Output noise 2 Switching frequency Vi nom, Io nom BW = 20 MHz 50 50 80 mVppTotal incl. spikes 60 75 120 vod Dynamic load regulation Voltage deviation 4 Vi nom , 0.1 ↔ 0.9 Io nom 700 800 1000 t d 3 Recovery time 5 5 5 ms αvo Temperature coefficient of vo (NTC) 0 - Io nom, TC min – TC max - 0.02 0 - 0.02 0 - 0.02 0 %/K 1 Breakdown voltage of the incorporated suppressor diode at 1 mA. Exceeding this value might damage the suppressor diode.

2 Measured according to IEC/EN 61204 with a probe described in annex A

3 Recovery time until Vo returns to ±1% of Vo; see fig. 5. 4 No overshoot at switch on. 5 Output overvoltage protection by an electronic circuitry.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 7 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Output Voltage Regulation Line and load regulation of the output is so good that input voltage and output current have virtually no influence to the output voltage. Vod Vod td td Vo ±1% Vo ±1% t t ≥ 10 µs ≥ 10 µs Vo 0.5 Io/Io nom 05102c Fig. 5 Typical dynamic load regulation of output voltage Thermal Considerations and Protection A temperature protection is incorporated in the secondary control logic. It generates an internal protection, which enters output voltage hiccup mode in case of over tem per a ture. The converter automatically recovers, when the temper a ture drops below the limit. The relationship between TA and TC depends heavily upon the conditions of operation and integration into a system. Caution: The installer must ensure that under all operating con ditions TC remains within the limits stated in table 7. 50 60 70 80 90 100 Po [W] TA [°C] TC max Convection coolingXRCM60 Fig. 6 Typical output power derating versus temperature; free convection cooling.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 8 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Output Current Limitation The output is continuously protected against open-circuit (no load), overload and short-circuit by an electronic current limitation with rectangular characteristic; see fig. 7. Vo Vo nom 0.98 0.5 0.5 1.0 IoL Io Io nom JM219 Fig. 7 Rectangular current limitation Series and Parallel Connection The outputs of several RCM Series converters may be con nected in series. Note: If the sum of the output voltages is greater than 60 V, it cannot be considered as ES1 (Safety Extra Low Voltage) according to the safety standard IEC/UL 62368-1. Several RCM models of the same type can be operated in parallel connection. To ensures proper current sharing, the load lines should have equal length and section. The output voltage exhibits a slight droop characteristic, which facilitates current sharing. In addition, the output voltage tends to be lowered with increasing temperature. Redundant Systems For redundant systems, we recommend the options Q and D, see Options. LED Indicator The converters exhibit a green LED “Out OK”, signalling that the output voltage is within the specified range.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 9 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Description of Options General conditions: - TA = 25 °C, unless TC is specified. Option D: Output Voltage Monitor Option D encompasses an output voltage monitor by a solid state relay. When Vo is in range, a solid state relay is activated (connecting OK1 with OK2). Max. data of relay contacts: 0.2 A /120 VDC Note: The trigger levels are typ. ±5 % of Vo. Option Q: ORing FET for Redundant Systems The outputs of 2 parallel connected converters are separated with ORing diodes (built by FETs). If one converter fails, the remaining one must be capable to still deliver the full power to the load. If more power is needed, the system may be extended to more parallel converters (n+1 re dundancy). Current sharing must be ensured by load lines of equal section and length. In addition, a slight droop characteristic of the output voltage and a negative temperature coefficient improve the load sharing as well. To keep the losses as small as possible, the ORing diode is replaced by a FET. The voltage drop is approx. 22 mV (not dependent of Io). Note: In the case of a failing converter, the output voltage is maintained by the redundant converters. However, the failing item should be identified and replaced. We recommend the Out OK function (option D). Option F: Incorporated Fuse The railway standard EN 50155 disadvises fuses in the con verters. Consequently, the installer must preview an external fuse or circuit breaker. However, when this is not possible, an in corporated fuse is available (option F). This fuse is not accessible and will not trip, except if the converter is defect. Note: Converters with option F are protected against input reverse polarity by a series FET. Table 4: Recommended external fuses (same as incorporated with option F) Converter Specification 12RCM60 15 A fast acting XRCM60 8 A fast acting Option K: Pluggable Connectors This option allows the use of pre-assembled pluggable connectors; for details see Accessories. Note: Female connectors must be ordered separately.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 10 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Electromagnetic Compatibility (EMC) Electromagnetic Immunity Table 5: Electromagnetic immunity (type tests). Corresponds or Exceeds EN50121-3-2:2016 and AREMA Phenomenon Standard Level Coupling mode 1 Value applied Waveform Source imped. Test procedure In oper. Perf. crit.2 Electrostatic discharge (to case) IEC/EN 61000-4-2 4 contact discharge 6000 Vp 1/50 ns 330 Ω 150 pF 10 pos. & 10 neg. discharges yes A air discharge 8000 Vp Electromagnetic field IEC/EN 61000-4-3 x antenna 20 V/m AM 80% / 1 kHz N/A 80 – 800 MHz yes A antenna

20 V/m

AM 80% / 1 kHz N/A 800 – 1000 MHz yes A

20 V/m 1400 – 2000 MHz

5 V/m 2000 – 2700 MHz

3 V/m 5100 – 6000 MHz

61000-4-4 3 capacitive, o/c ±2000 Vp bursts of 5/50 ns; 2.5/5 kHz over 15 ms; burst period: 300 ms 50 Ω 60 s positive 60 s negative transients per coupling mode yes A 3 i/c, +i/–i direct coupling Surges IEC/EN 61000-4-5 3 i/c ±2000 Vp 1.2 / 50 µs 42 Ω 0.5 μF 5 pos. & 5 neg. surges per coupling mode yes A +i/–i ±1000 Vp Surges Arema 11.5.2 i/c, +i/–i ±2000 Vp 1.2 / 50 µs 12 Ω 9 μF 5 pos. & 5 neg. surges per coupling mode yes B 2 Ω 18 μF 3 Conducted disturbances IEC/EN 61000-4-6 3 i, o, signal wires 10 VAC (140 dBµV) AM 80% / 1 kHz 150 Ω 0.15 – 80 MHz yes A 1 i = input, o = output, c = case 2 A = normal operation, no deviation from specs.; B = normal operation, temporary loss of function or deviation from specs possible 3 Test is applicable for 12RCM models, only.

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 11 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Electromagnetic Emissions All conducted emissions (fig. 8) have been tested as per EN 55011, group 1, class A. These limits are much stronger than requested in EN 50121-3-2:2016, table 2.1, and coin cide with EN 50121-4:2016, table 1.1. The values in fig. 8 are quasipeak values, which are always lower then peak values. The average values must respect a margin of 10 dBµV below the limits for quasipeak. Radiated emissions have been tested according to EN 55011, group 1, class A. These limits are similar to the requi re ments of EN 50121-3-2:2016 and EN 50121-4:2016, both calling up EN 61000-6-4+A1:2011, table 1. The tests were executed with horizontal and vertical polarization. The worse result is shown in Fig. 9. Note: The highest frequency of the internal sources of EUT is less than 108 MHz. Hence, Radiated Measurement was made up to 1 GHz. Non-accredited measurement up to 6 GHz are available on request. Fig. 8a XRCM60-24: Typ. disturbance voltage at the input (Vi = 16.8 V, Ii nom, resistive load, quasi peak and average) Fig. 8b XRCM60-24: Typ. disturbance voltage at the input (Vi = 137.5 V, Ii nom, resistive load, quasi peak and average) Fieldstrenght in dB(uV/m) QP LIMIT EN 61000-6-4 < 30 dB (uV/m) Fieldstrenght in dB(uV/m) QP LIMIT EN 61000-6-4 < 30 dB (uV/m) Fig. 9a XRCM60-24: Typ. radiated disturbances in 10 m distance (Vi = 16.8 V, Ii nom, resistive load, quasi peak). Fig. 9b XRCM60-24: Typ. radiated disturbances in 10 m distance (Vi = 137.5 V, Ii nom, resistive load, quasi peak).

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 12 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Immunity to Environmental Conditions Table 6: Mechanical and climatic stress. Air pressure 700 – 1200 hPa Test method Standard Test Conditions Status Ad Low temperature start-up test EN 50155:2017, clause 13.4.4 IEC/EN 60068-2-1 Temperature, duration: - 40 °C, 2 h Operating perf. crit. APerformance test: +25 °C Be Dry heat test, cycle A EN 50155:2017, clause 13.4.5 IEC/EN 60068-2-2 Temperature: 70 °C Operating perf. crit. ADuration: 6 h Db 2 Cyclic damp heat test EN 50155:2017, clause 13.4.7 IEC/EN 60068-2-30 Temperature: 55 °C and 25 °C Not operating Cycles (respiration effect): 2 Duration: 2x 24 h Ka Salt mist test sodium chloride (NaCl) solution EN 50155:2017, clause 13.4.10 IEC/EN 60068-2-11 Temperature: 35 ±2 °C Converter not operatingDuration: 48 h - Functional random vibration test EN 50155:2017 clause 13.4.11.4 EN 61373:2010 clause 8, class B, body mounted 1 Acceleration amplitude: 0.1 gn = 1.01 m/s2 Operating perf. crit. A Frequency band: 5 – 150 Hz Test duration: 30 min (10 min in each axis) - Simulated long life testing EN 50155:2017 clause 13.4.11.2 EN 61373:2010 clause 9, class B, body mounted 1 Acceleration amplitude: 0.58 gn = 5.72 m/s2 Not operating Frequency band: 5 – 150 Hz Test duration: 15 h (5 h in each axis) - Shock test EN 50155:2017 clause 13.4.11.3 EN 61373:2010 clause 10, class B, body mounted 1 Acceleration amplitude: 5.1 gn Operating perf. crit. A Bump duration: 30 ms Number of bumps: 18 (3 in each direction) - Vibration sinusoidal AREMA Part. 11.5.1 class C, D, E, I, J Displacement amplitude: 0.3” (5 – 10 Hz) 0.07” (5 – 20 Hz) Operating perf. crit. A Acceleration amplitude: 1.5 gn = 14.7 m/s2 (10 – 200 Hz) Frequency: 5 – 200 Hz Test duration: 12 h (4 h in each axis) - Mechanical shock AREMA Part. 11.5.1 class C, D, E, I, J Acceleration amplitude: 10 gn = 98 m/s2 Operating perf. crit. A Bump duration: 11 ms Number of bumps: 18 (3 in each direction)

1 Body mounted = chassis of a railway coach

Table 7: Temperature specifications, valid for an air pressure of 700 – 1200 hPa (700 – 1200 mbar) Temperature EN 50155:2017 Class OT4 Unit Characteristics Conditions min max 10 minutes TA Ambient temperature Converter operating - 40 70 85 °CTC Case temperature 1 - 40 90 TS Storage temperature Not operational - 55 85 1 Measured at the measurement point TC ; see Mechanical Data. Reliability Table 8: MTBF and device hours Ratings at specified case temperature between failures Model MTBF According to IEC 61709 / SN 29500 XRCM60-24DQF 1.24 million hours

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 13 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Mechanical Data 172 3250 14.6 7.8 Wago 236-404 Vi+ Vi- SD Tc measurement point Input connector No Paint Zone for ground screw ø 10 mm 160 328.7 37.05 Ø 4.5 (4x) Vo+ Vo- OK1 OK2 Output connector Fig. 10 Case of RCM60 with standard cage clamp terminals, Aluminum, EP-powder coated Weight approx. 350 g

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 14 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Safety and Installation Instruction Connectors and Pin Allocation RCM60 (standard version) - Input connector: 4 pins: Wago 236-404: Vi+, Vi–, SD, PE wire section: 0.08 – 2.5 mm2, 28 – 12 AWG - Output connector: 4 pins: Wago 236-404: Vo+, Vo–, OK1/n.c., OK2/n.c. wire section: 0.08 – 2.5 mm2, 28 –12 AWG Fig. 11 Pin allocation of RCM60 (standard version) Table 9a: Input connector (standard version) Pin no. Pin description Function

1 Vi+ Input positive

2 Vi- Input negative

3 SD Primary shutdown

4 Protective earth PE

Table 9b: Output connector (standard version) Pin no. Pin description Function

1 Vo+ Output positive

2 Vo- Output negative

3 OK1/n.c. Relay contact 1 / Not connected 1 4 OK2/n.c. Relay contact 2 / Not connected 1

1 Not connected if option D is not fitted

RCM60 (K option) - Input connector: 4 pins: Phoenix 1923995: Vi+, Vi–, SD, PE - Output connector: 6.1 3.7 2.41.3 Phoenix contact

1942280 Phoenix contact

Fig. 12a Assembled input and output connector RCM60 (K option) Fig. 12b Pin allocation of RCM60 (K option) Table 10a: Input connector (K option) Pin no. Pin description Function Table 10b: Output connector (K option) Pin no. Pin description Function 3 n.c. Not connected 4 OK1/n.c. Relay contact 1 / Not connected 1 5 OK2/n.c. Relay contact 2 / Not connected 1

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 15 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Installation Instruction These converters are components, intended exclusively for inclusion by an industrial assembly process or by a professionally competent person. Installation must strictly follow the national safety regulations in respect of the enclosure, mounting, creepage distances, clearances, markings and segregation requirements of the end-use application. Connection to the system is allowed only with cables having suitable wire section, (see section “Connectors and Pin Allocation”). Other installation methods may not meet the safety requi rements. Check that PE is safely connected to protective earth. No fuse is incorporated in the converter (except for option F). An external circuit breaker or a fuse in the wiring to one or both input pins. Do not open the converters, or the warranty will be invalidated. Make sure that there is sufficient airflow available for convection cooling and that the temperature of the bottom plate is within the specified range. This should be verified by measuring the case temperature at the specified measuring point, when the converter is operated in the end-use application. TC max should not be exceeded. Ensure that a failure of the converter does not result in a hazardous condition. Standards and Approvals The RCM Series converters are approved according to the last edition of IEC/EN 62368-1 and UL/CSA 62368-1. They have been evaluated for:

• Class I equipment
• Building in
• Reinforced insulation between input and output
• Basic insulation between input and chassis, input and relay contacts (OK1, OK2) and output to relay contacts (OK1, OK2)
• Pollution degree 2 environment
• Altitude 3000 m The converters are subject to manufacturing surveillance in accordance with the above mentioned safety standards and with ISO 9001:2015, IRIS ISO/TS 22163:2017 certified quality and business management system. Cleaning Liquids and Protection Degree The converters are not hermetically sealed. In order to avoid possible damage, any penetration of liquids shall be avoided. The converters correspond to protection degree IP 30. Railway Applications The RCM Series converters have been designed observing the railway standards EN 50155:2017, EN 50121-3-2:2016, EN 50124-1:2017 and AREMA. All boards are coated with a protective lacquer. The converters comply with the fire & smoke standard EN 45545:2016, HL1 to HL3. Insulation Test The electric strength test is performed in the factory as routine test in accordance with EN 62911, EN 50155:2017, and AREMA. It should not be repeated in the field, and the Company will not honor warranty claims resulting from incorrectly executed electric strength tests. Table 11: Isolation Characteristics Input to Output 1 Input to Case Output to Case OK contacts to Unit Input Case Outputs Voltage withstand levels Insulation resistance 2 >300 >300 >300 >300 >300 >300 MΩ

1 Pretest of subassemblies in accordance with IEC/EN 62368-1

2 Tested at 500 VDC

tech.support@psbel.com belfuse.com/power-solutions BCD.00989 Rev A, 14-Jun-2021 Page 16 of 16 RCM60 Series © 2021 Bel Power Solutions & Protection Accessories Female Connectors For converters RCM60 with option K, use (see Fig.13):

• Input plug: Phoenix Contact P/N: 1942280 (HZZ00151-G) Wire section: 0.2 – 2.5 mm2, 24 – 12 AWG
• Output plug: Phoenix Contact P/N: 1851261 (HZZ00152-G) Wire section: 0.14 - 1.5mm2, 26 - 16 AWG Fig. 13a Input plug for RCM60 with option K Fig.13b Output plug for RCM60 with option K DIN-Rail Mounting Bracket DMB A suitable DIN-Rail mounting bracket HZZ00625-G is available; see Fig. 14. Fig. 14 DIN-Rail mounting bracket for RCM series HZZ00625-G NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.