Product Datasheet DCNSEV30 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY Applications Battery Electric Vehicles Electric Maintenance and Transport Vehicles Hybrid Electric Vehicles Industrial Applications Material Handling Features and Benefits High current (30A) and high voltage (900V) contactor for EV applications 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 Description certification for Automotive Quality Systems. High current and high voltage DC contactor relays for electric Designed specifically for automotive applications. vehicle applications such as battery power supply, charging pill, motor control, circuit insulation, circuit protection, and Electrical Diagram also safety devices for industrial machinery. Are available with polarized and non-polarized contacts to best suit electrical systems polarity. +A1 -A2 POS. TERM. NEG. TERM. Specifications Overview Amperage: 30A Continuous Carry COIL WHITE Housing: Nylon UL 94-V0 Voltage Rating: 12-900V Output Connectors: M5 Bolt and Lockwasher Connections Estimated Make Break Chart (not supplied) Connectors: Wire Leads for Control Circuit Ingress Protections: IP67 Operating Temperature: -40 to 85C 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 Load Current (A) COIL VOLTAGE COIL VOLTAGE BOTTOM PART NUMBER DESCRIPTION 12V DC 24V DC 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 littelfuse.com 2020 Littelfuse Commercial Vehicle Products Rev: 120720-B Estimated Life (Cycles)Product Datasheet DCNSEV30 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY Performance Data MAIN CONTACT LIFE Contact arrangement 1 Form X (SPST-NO, DM) 30A +450VDC (make/break) 10,000 cycles Rated Operating Voltage 12-900VDC 30A +750VDC (make/break) 4,000 cycles 1 Continuous (Carry) Current 30A* Mechanical life 200,000 cycles 2 Short term 50A (3 minutes)* OPERATE / RELEASE TIME Max short circuit current 1,250A (1/2 cycle, 60Hz) (through closed contacts) Close (includes bounce) 25ms, Max. Dielectric Withstanding Voltage Between open contacts: Release 10ms, Max. 5,600Vrms/8,000Vdc Between contact and coil: MAX. BREAKING LIMIT MAX. SHORT CIRCUIT 2,200Vrms/4,000Vdc 300A 320VDC, 1 cycle 300A, 1 sec Insulation Resistance Terminal to Terminal/Terminal to coil New: Min 100 M 500Vdc ENVIRONMENTAL DATA End of life: Min 50 M 500Vdc Shock, 11ms 1/2 sine, operating 20G Peak Voltage Drop ( 30A) 60mV Vibration, Sine, Peak, 20G 552,000Hz 1: Current is relevant to the cross-sectional area of conductor. 2: Ambient temperature: +40C, 3 minutes Operating Ambient Temperature -40 to +85C Noise ( 100mm) 70dB(a) COIL DATA Altitude <4000m Voltage rating 12Vdc 24Vdc Weight 0.28 Lb (0.13 kg) Pickup voltage (25C) 8Vdc 18Vdc Dropout voltage (25C) 1.2Vdc 2.4Vdc Max Pickup voltage (85C ) 9.6Vdc 19Vdc Application Note: Rated coil resistance5% (25C) 25 92 1. Be sure to use washer to prevent screws from loosening, all the terminals or copper bar must be in direct contact with the contactors terminals. Screw Coil watts (25C) 6.0W 6.0W tightening torque is specified below. Exceeding the maximum torque can lead to product failure. Current vs Time Curve Contact torque: 30 - 40 lb.in (3.4 - 4.5 N.m) Max. Active length of thread 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. Web Resources Download 2D print and technical resources at: littelfuse.com/DCNSEV30 littelfuse.com 2020 Littelfuse Commercial Vehicle Products Rev: 120720-B