DCNSEV30 LITTELFUSE | Alldatasheet

Document overview

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Technical content

© 2022 Littelfuse Commercial Vehicle Products Rev: 060222-D littelfuse.com Product Datasheet

Applications

  • High current (30A) and high voltage (900V) contactor for EV
  • Compact structure, helping reduce noise when turned on
  • 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. Electrical Diagram Estimated Make Break Chart

Description

High current and high voltage DC contactor relays for electric vehicle applications such as battery power supply, charging pill, motor control, circuit insulation, circuit protection, and also safety devices for industrial machinery. Specifications Overview Amperage: 30A Continuous Carry Housing: Nylon UL 94-V0 Voltage Rating: 12-900V Output Connectors: M5 Bolt and Lockwasher Connections (not supplied) Connectors: Wire Leads for Control Circuit Ingress Protections: IP67 Operating Temperature: -40 to 85°C Circuitry: SPST NO Coil Voltage: B: 12V DC Nominal, 8 - 16V DC Working C: 24V DC Nominal, 18 - 28V DC Working Max Coil Inrush Current: B: 500mA Max to coil C: 250mA Max to coil Mounting: M4 with Compression Limiters (not supplied) Size: 54mm x 40mm x 45mm Mounting Bolt Torque: 2.3 Nm (20 in-lb) Contact Torque: 3.4 - 4.5 Nm (30 - 40 in-lb) Terminals: M5 Silver Plated Copper Approvals: UL File No. E510407 Recognized

Ordering Information

DCNSEV30 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY PART NUMBER DESCRIPTION COIL VOLTAGE 12V DC COIL VOLTAGE 24V DC BOTTOM MOUNT DCNSEV30-B High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNSEV30-C High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • WHITE +A1 POS. TERM. -A2 NEG. TERM. COIL

  • Battery Electric Vehicles
  • Hybrid Electric Vehicles
  • Material Handling
  • Electric Maintenance and Transport Vehicles
  • Industrial Applications Estimated Life (Cycles) Load Current (A)

© 2022 Littelfuse Commercial Vehicle Products Rev: 060222-D littelfuse.com Product Datasheet DCNSEV30 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY Performance Data MAIN CONTACT Contact arrangement 1 Form X (SPST-NO, DM) Rated Operating Voltage 12-900VDC Continuous (Carry) Current 30A*1 Short term 50A (3 minutes)*2 Max short circuit current 1,250A (1/2 cycle, 60Hz) (through closed contacts) Dielectric Withstanding Voltage Between open contacts: 5,600Vrms/8,000Vdc Between contact and coil: 2,200Vrms/4,000Vdc Insulation Resistance Terminal to Terminal/Terminal to coil New: Min 100 MΩ @500Vdc End of life: Min 50 MΩ @500Vdc Voltage Drop (@30A) ≤60mV LIFE Electrical life See estimated make break chart Mechanical life 200,000 cycles ENVIRONMENTAL DATA Shock, 11ms 1/2 sine, operating 20G Peak Vibration, Sine, Peak, 20G 55—2,000Hz Operating Ambient Temperature -40 to +85˚C Noise (@100mm) 70dB(a) Altitude <4000m Weight 0.28 Lb (0.13 kg) OPERATE / RELEASE TIME Close (includes bounce) 25ms, Max. Release 10ms, Max. COIL DATA Voltage rating 12Vdc 24Vdc Pickup voltage (25˚C) 8Vdc 18Vdc Dropout voltage (25˚C) 1.2Vdc 2.4Vdc Max Pickup voltage (85˚C ) 9.6Vdc 19Vdc Rated coil resistance±5% (25˚C) 25Ω 92Ω Coil watts (25˚C) 6.0W 6.0W 1: Current is relevant to the cross-sectional area of conductor. 2: Ambient temperature: +40˚C, 3 minutes Current vs Time Curve Web Resources Download 2D print and technical resources at: littelfuse.com/DCNSEV30 MAX. BREAKING LIMIT MAX. SHORT CIRCUIT 300A@320VDC, 1 cycle 300A, 1 sec Application Note: 1. Be sure to use washer to prevent screws from loosening, all the terminals or copper bar must be in direct contact with the contactor’s terminals. Screw tightening torque is specified below. Exceeding the maximum torque can lead to product failure. is 7 .0 mm

  • Mounting torque: 20 lb.in (2.3 N.m) 2. Contact terminals are polarized so refer to drawing during connecting. We suggest using a varistor rather than diode as a surge protector. 3. Do not use if dropped. 4. Avoid installing in a strong magnetic field (close to a transformer or magnet), or near a heat source. 5. Electrical life Use per load capability and life cycle limits so as not to cause a function failure (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 occurs. It is necessary to take layout into account and 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 generated by contact operation). Operate only in an ambient temperature from -40 to +85 ˚C. 7. Drive power must be greater than coil power or it will reduce performance capability. 8. Avoid debris or oil contamination on the main terminals to optimize contact and avoid excess heat generation. 9. After continuous rated voltage / current has been applied to the coil and contacts, turning off the coil and immediately re-energizing the coil will result in a higher pick-up voltage than the rated value. This is due to increased coil resistance (coil temperature rise) of the device.