DCNEV250 LITTELFUSE | Alldatasheet

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© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-C littelfuse.com 1 of 4 Product Datasheet DCNEV250 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY Specifications Overview Amperage: 250A Continuous Carry Housing: Nylon UL 94-V0 Voltage Rating: 900V Output Connectors: M8 x 1.25 High Current Connections Connectors: Wire Leads for Control Circuit Ingress Protections: IP67 Operating Temperature: -40°C to 85°C Circuitry: SPST NO Coil Voltage: M: 12-24V DC Nominal, 9-36V DC Working F: 72V DC Nominal, 48-95V DC Working G: 48-72V DC Nominal, 32-95V DC Working Max Coil Inrush Current: 0.7-3.8A Mounting: #10 with Compression Limiters Size: Reference Dimensions on Page 2 Mounting Bolt Torque: 1.7-3.3 Nm (15-30 in-lb) Contact Torque: 8.8-11 Nm (80-100 in-lb) Terminals: M8 Silver Plated Copper Approvals: UL File No. E510407 Recognized Features and Benefits

  • High current (250A) and high voltage (900V) contactor for EV

applications

  • Compact structure, helping reduce noise when turned on
  • Coil Enonomizer greatly reduces coil power and heating
  • Sealed IP67, gas-filled relay which mitigates arcing
  • No mounting orientation restrictions
  • Designed and manufactured under the IATF16949 certification for Automotive Quality Systems.
  • Designed specifically for automotive applications.

Description

High current and high voltage DC contactor relays for electric vehicle applications such as charging station, battery power supply, DC power control, circuit protection, and other switch controls. Can also be used in uninterruptible power supply and other electronic control systems. Are available with polarized and non-polarized contacts to best suit electrical systems’ polarity. The Coil Economizer greatly reduces coil power and heating after the contactor is energized. Once the contactor is energized, it takes minimal coil power to keep the contacts closed due to Pulse Width Modulation (PWM) reducing the average power delivered by pulsing the electrical signal.

Ordering Information

Please see page 2 for more information

  • Battery Electric Vehicles
  • Hybrid Electric Vehicles
  • Material Handling
  • Electric Maintenance and Transport Vehicles
  • Industrial Applications Web Resources Download 2D print and technical resources at: littelfuse.com/DCNEV250

© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-C littelfuse.com 2 of 4 Product Datasheet DCNEV250 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR DCNEV250-M High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNEV250-MN High Voltage DC Contactor Relay Bottom Mount with Non-Polar Load Terminals • • • DCNEV250-MA High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-MAN High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit & Non-Polar Load Terminals • • • • DCNEV250-MP High Voltage DC Contactor Relay Bottom Mount with Potted PCB with Polar Load Terminals • • • DCNEV250-MB High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-F High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNEV250-FA High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-FAN High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit & Non-Polar Load Terminals • • • • DCNEV250-FB High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-FN High Voltage DC Contactor Relay Bottom Mount with Non-Polar Load Terminals • • • DCNEV250-G High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNEV250-GA High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-GAN High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit & Non-Polar Load Terminals • • • • DCNEV250-GB High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEV250-GN High Voltage DC Contactor Relay Bottom Mount with Non-Polar Load Terminals • • • * Box Packaging Available

© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-C littelfuse.com 3 of 4 Product Datasheet DCNEV250 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR Dimensions in MM Estimated Make Break ChartEstimated Life (Cycles) Load Current (A) Capacitive Make T est Curve Current (A) Time (ms) 80.7 3.18 12.7 .50 72.6 2.86 56.1 2.21 COIL WIRES LENGTH: 390 OPTIONAL AUX. CONTACT LENGTH: 390 (2) M8 x 1.25 SCREW TERMINALS 58.2 2.29 68.5 2.70 65.7 2.59 (2) 5.8 .23 Electrical Diagram OPTIONAL AUX. CONTACT WHITE OPTIONAL WHITE BLACK (-)RED (+) POS. TERM. NEG. TERM. COIL AUX. CONTACT Note: Estimates based on extrapolated data. User is encouraged to confirm performance in application. MAKE/BREAK LIFE CAPACITIVE & RESISTIVE LOADS AT 320VDC *1 @90% pre-charge (make only), see chart below 50,000 cycles @Min 80% pre-charge (make only), see chart below 50 cycles Electrical Load Life Ratings for T ypical EV Applications 1: Resistive load includes L=25uH. Load @2500A, test @200uH POLARITY SENSITIVE TYPE NON-POLARITY SENSITIVE TYPE Voltage (V) 450 650 650 450 Current(A) 250 250 100 100 Life (cycles) 5,000 500 1,000 10,000 Estimated Electrical Life

© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-C littelfuse.com 4 of 4 Product Datasheet Performance Data MAIN CONTACT Contact arrangement 1 Form X (SPST-NO, DM) Rated Operating Voltage 12-900VDC Continuous (Carry) Current 250A (65˚C) * 2 Max short circuit current 2,000A @320VDC, 1 cycle* 1 Dielectric Withstanding Voltage 2,200Vrms (leakage <1mA) Insulation Resistance Terminal to Terminal/Terminal to coil New: Min 100 MΩ @500Vdc End of life: Min 50 MΩ @500Vdc Voltage Drop (@250A) ≤50mV LIFE Resistive load life See estimated make break chart Mechanical life 200,000 cycles ENVIRONMENTAL DATA Shock, 11ms ½ sine, operating 20G Peak Vibration, Sine, Peak, 20G 80—2,000Hz Operating Ambient Temperature -40 to +85˚C Weight 0.95 Lb (0.43 kg) Altitude <4000m OPERATE / RELEASE TIME Close (includes bounce) 25ms, Max. Release 12ms, Max. COIL DATA Coil Voltage 12 - 24Vdc 72Vdc 48 - 72Vdc Voltage (Max.) 36Vdc 95Vdc 95Vdc Pickup voltage (Max.) 9Vdc 48Vdc 32Vdc Dropout voltage (Min.) 6Vdc 27Vdc 18Vdc Inrush Current (Max.) 3.8A 0.7A 1.3A Holding Current (Avg.) 0.13A@12Vdc / 0.07A@24Vdc 0.02A@72Vdc 0.03A@48Vdc MAX. BREAKING LIMIT MAX. SHORT CIRCUIT 2,000A @ 320VDC, 1 cycle 3,000A, 1 sec AUX. CONTACT Aux. Contact Arrangement 1 Form A, 1 Form B Aux. Contact Current Max 2A@30VDC/ 3A@125VAC Aux. Contact Current Min 100mA@8V Max. Contact Resistance 0.417Ω@30VDC 0.150Ω@125VAC Current vs Time Curve Application Note: 1. Be sure to use washer to prevent screws from loosening. Tighten the screw torque range is specified as below. Exceeding the maximum torque can lead to product rupture.

  • Contact torque (M8): 80 - 100 lb.in (8.8 - 11 N.m)
  • Mounting torque: 15 - 30 lb.in (1 .7 - 3.3 N.m) 2. Please refer to drawing for polarity sensitive type during connecting; No orientation for non-polar type. 3. Do not use dropped products. 4. Avoid to install the product in a strong magnetic field (Close to the transformer or magnet), or near an object with heat radiation. 5. Electrical life Please use under load capability and life cycle so as not to cause a function failure. (Please also treat the contactor as a product with specified life and replace it when necessary). It is possible to make parts burn around the contactor once operating failure happens. So it is necessary to take layout into account to make sure power shall be cut off within 1 second. 6. Lifetime of internal gas diffusion The contactor is sealed and filled with gas, lifetime of gas diffusion is determined by temperature in contact chamber (Ambient temperature + Temperature rising by contact energizing).Therefore environment temperature should be from -40 to +85˚C. 7. Do not let particle and oil stain on the main terminal with which the load shall make a reliable contact. Or it will cause a lot of heat. 1: Does not meet dielectric & IR after test. 2: Higher currents are possible but are relevant to cross-sectional area of conductor. DCNEV250 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR