DCNEVT350 LITTELFUSE | Alldatasheet
Document overview
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Technical content
© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-D littelfuse.com 1 of 3 Product Datasheet DCNEVT350 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY
Description
High current and high voltage DC contactor relays for electric vehicle, hybrid electric vehicle, circuit protection, battery switch, and main power break. 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. Utilizes polarized contacts for optimum performance amidst polarized electrical loads. Web Resources Download 2D print and technical resources at: littelfuse.com/DCNEVT350
Ordering Information
PART NUMBER DESCRIPTION COIL VOLTAGE 12V DC COIL VOLTAGE 24V DC BOTTOM MOUNT AUXILIARY CONTACT SPST-NO DCNEVT350-B High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNEVT350-BA High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • DCNEVT350-C High Voltage DC Contactor Relay Bottom Mount with Polar Load Terminals • • DCNEVT350-CA High Voltage DC Contactor Relay Bottom Mount with Auxiliary Circuit with Polar Load Terminals • • • Specifications Overview Amperage: 350A Continuous Carry Housing: Nylon UL 94-V0 Voltage Rating: 1800V Connectors: Sealed Control Wire Connector (Included) Aptiv P/N 12162017 Ingress Protections: IP54 Operating Temperature: -40°C to 85°C Circuitry: SPST NO Coil Voltage: B: 12V DC Nominal, 9-16V DC Working C: 24V DC Nominal, 18-28V DC Working Max Coil Inrush Current: B: 2.8A Max to coil C: 1.8A Max to coil Size: Reference Dimensions on Page 2 Mounting: M6 Mounting Bolt Torque: 1.7-3.3 Nm (15-30 in-lb) Contact Torque: 6-8 Nm (53-70 in-lb) Terminals: M6 Silver Plated Copper Approvals: UL File No. E510407 Recognized Features and Benefits
- High current (350A) and high voltage (1800V) contactor for EV applications
- Coil Enonomizer greatly reduces coil power and heating
- Hermetically sealed contact chamber to protect all moving parts
- Sealed control wire connector included
- Able to handle harsh environments
- Designed and manufactured under the IATF16949 certification for Automotive Quality Systems.
- Designed specifically for automotive applications.
Applications
- Battery Electric Vehicles
- Hybrid Electric Vehicles
- Material Handling
- Electric Maintenance and Transport Vehicles
- Industrial Applications With Auxiliary Circuit Without Auxiliary Circuit * Box Packaging Available
© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-D littelfuse.com 2 of 3 Product Datasheet Dimensions in MM Capacitive Make T est CurveEstimated Make Break Chart DCNEVT350 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY Estimated Life (Cycles) Load Current (A) Current (A) Time (ms) COIL -A2 NEG. TERM. +A1 POS. TERM. RED (+) BLACK (-) OPTIONAL WHITE OPTIONAL AUX. CONTACT WHITE AUX. CONTACT Electrical Diagram 49.6 1.95 47.7 1.88 55.6 2.19 57.0 2.25 (2) 6.0 .24 COIL CONNECTOR PROVIDED 45.0 1.77 89.1 3.51 OPTIONAL AUX. CONTACT LENGTH: 150 Test run under controlled conditions. User to verify in actual application.
© 2022 Littelfuse Commercial Vehicle Products Rev: 050222-D littelfuse.com 3 of 3 Product Datasheet Performance Data MAIN CONTACT Contact arrangement 1 Form X (SPST-NO, DM) Rated Operating Voltage 12-1,800VDC Continuous (Carry) Current 350A*1 Short term Carry Current 400A (6.5 minutes) * 2 Max short circuit current 2,300A @ 450VDC (1 cycle) Dielectric Withstanding Voltage Between open contacts: 4,000VDC (leakage ≤1mA) Between contact and coil: 2,200Vrms (leakage ≤1mA) Insulation Resistance Terminal to Terminal/Terminal to coil New: Min 100 MΩ @500Vdc Voltage Drop (@350A) ≤120mV LIFE Electrical Life See estimated make break chart Mechanical life 200,000 cycles ENVIRONMENTAL DATA Shock, 11ms ½ sine, operating 20G Peak Vibration, Sine, Peak, 20G 10—1,000Hz Operating Ambient Temperature -40 to +85˚C Weight 1.76 lb (0.8 kg) Altitude <4000m Noise (@100mm) 70dB(a) OPERATE / RELEASE TIME Close (includes bounce) 18ms, Max. Bounce (after close) 5ms, Max. Release 15ms, Max. MAX. BREAKING LIMIT MAX. SHORT CIRCUIT 3,000A @ 750VDC, 1 cycle 3,500A, 1 sec AUX. CONTACT Aux. Contact Arrangement SPST-NO (1 Form A) Aux. Contact Rating (Max Wattage) 10W Aux. Contact Rating (Max Voltage) 100 VDC Aux. Contact Resistance (Max) 500mΩ Current vs Time Curve 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.
- Contact Terminal Torque: 53 - 70 lb.in (6 - 8 N.m)
- Mounting Torque: 15 - 30 lb.in (1 .7 - 3.3 N.m) 2. Contact terminals are polarized so refer to drawing during connecting. There is a reverse surge absorption circuit so that it is not necessary to use a surge protective device. 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 considerations into account and to make sure power shall be cut off within 1 second. 6. Avoid debris or oil contamination of the main terminals to optimize contact and avoid excess heat generation. 1: Current is relevant to cross-sectional area of conductor. 2: Ambient Temperature +65˚C COIL DATA Voltage rating 12Vdc 24Vdc Pickup voltage (25˚C) 10Vdc 19Vdc Dropout voltage (25˚C) 4Vdc 9Vdc Inrush current @ nominal voltage 2.8A 1.8A Holding current @ nominal voltage 0.40A 0.11A DCNEVT350 SERIES HIGH CURRENT HIGH VOLTAGE DC CONTACTOR RELAY