DCNHE30 LITTELFUSE | Alldatasheet

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Technical content

© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Rev: 121125 Product Datasheet 1000V DC Max Contactor Relays DCNHE30 Series

Description

Ideal for electric vehicle and industrial applications, including battery power supply, charging pile, motor control, circuit insulation, circuit protection, and industrial safety devices, the DCNHE30 Series high-voltage DC contactor relay is engineered for long-term durability with polarized contacts. Its compact, bottom-mounting design reduces noise and allows flexible installation, while durable resin housing provides corrosion resistance. Sealed contacts prevent electrical arc leakage, and internal-thread M4 terminals ensure secure connections. IP67-rated, the DCNHE30 Series contactor is suitable for BEVs, HEVs, material handling, and electric transport vehicles. Web Resources Download 2D print, installation guide and technical resources at: littelfuse.com/DCNHE30 Features and Benefits

  • High current (30A) and high voltage (1000V) contactor for EV applications
  • Compact structure, helping reduce noise when turned on
  • Resin housing provides corrosion resistance in harsh automotive environments
  • Sealed contacts with no leakage of electrical arc for maximum safety
  • No mounting orientation restrictions
  • Complies with EU RoHS & REACH

Applications

  • Battery Electric Vehicles
  • Hybrid Electric Vehicles
  • Material Handling
  • Electric Maintenance and Transport Vehicles
  • Industrial applications Specifications Rating Continous Current: 30A Contact Max. Voltage: 1000V DC Contact Circuitry: SPST NO Ingress Protection: IP67 Contacts Material: Copper Alloy Terminals: M4 internal thread Silver-Plated Copper Contact Torque: M4 Bolt: 1.5~2N·m Housing: Nylon UL 94 V-0 Coil Connector: Wire Leads for Control Circuit Coil Type: Single Mounting Method: M4 Bolt Mounting Torque: M4 Bolt:1.8~ 2.3N·m Normal Position: Any Mounting Position Approvals: UL File Number: CE: E47258 Recognized EN 60947-4-1,2018

Ordering Information

PART NUMBER RATED CURRENT(A) POLARIZED AUX. CONTACT COIL VOLTAGE(V DC) MOUNTING POWER CONNECTION DCNHE30PF12-F 30 Yes No 12 Bottom Internal Thread DCNHE30PF24-F 30 Yes No 24 Bottom Internal Thread DCNHE30PF48-F 30 Yes No 48 Bottom Internal Thread

© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Rev: 121125 Product Datasheet 1000V DC Max Contactor Relays DCNHE30 Series Performance Data MAIN CONTACT Contact Arrangement 1 Form, SPST-NO Operating Voltage 12~1,000V DC Continous Current 30A Max Short Circuit 500A, 0.6sec Max Breaking Limit 300A@320V DC, 1cycle Dielectric Withstanding Voltage Between contacts: 4,000VAC, ≤1mA,1min Between contacts and coil: 2,200VAC, ≤1mA,1min Insulation Resistance Min. 100 MΩ@500V DC Contact Voltage Drop ≤60mV@30A LIFE Electrical Life Please See Make Break Chart Mechanical Life 300,000 cycles OPERATE / RELEASE TIME Pickup Time (includes bounce) ≤25ms Release Time ≤10ms ENVIRONMENTAL DATA Shock, 11ms ½ Sine, Operating 20g, Peak Vibration, Sine 55-2000Hz, 20g, Peak Operating Temperature -40°C~+85°C Humidity 5%~85%RH (No ice or condensation) Weight about 115g COIL DATA Rating Voltage 12V DC 24V DC 48V DC Voltage (Max.) 14.4V DC 28.8V DC 57.6V DC Pickup Voltage (25°C) ≤9V DC ≤18V DC ≤36V DC Holding Current (25°C) ≤0.5A ≤0.25A ≤0.13A Wattage (25°C) 5~6W 5~6W 5~6W Note: Electrical life rating is based on resistive load with 27µH maximum inductance in circuit. Because your application may be different, we suggest you test the contactor in your circuit to verify life is as required. Note: The above data was tested at 65C°, cross-sectional area of the wire≥ 10mm Note: The coil of the product may operate at maximum voltage for a maximum duration of 30 minutes. Estimated Make Break Chart Carry Current vs Time at 65ºC Chart 100 1000 10000 100000 100 1000 T ime(sec.) L oad Current(A) 75A 60min 100A 20min 200A 30S 400A 2S 500A 0.6S 30A Cont. 30A Electrical Diagrams K +A1 -A2

© 2025 Littelfuse, Inc. Specifications are subject to change without notice. Rev: 121125 Product Datasheet 1000V DC Max Contactor Relays DCNHE30 Series

  • 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.
  • Contact torque: in (1.5 ~2) N.m.
  • Mounting torque: 1.8~ 2.3N·m.
  • Contact terminals are polarized so refer to drawing during connecting. We suggest using a varistor rather than diode as a surge protector.
  • Do not use if dropped.
  • Avoid installing in a strong magnetic field (close to a transformer or magnet), or near a heat source.
  • 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.
  • 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.
  • Drive power must be greater than coil power or it will reduce performance capability.
  • Avoid debris or oil contamination on the main terminals to optimize contact and avoid excess heat generation.
  • 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.
  • Applications with capacitors will require a pre-charge circuit. Part Number System DCNHE 30 P F 12 -F Series Current Main Contacts Polarization and Aux Contact Main Contacts Voltage Coil Voltage Mounting and Power Connection MAIN CONTACTS POLARIZATION AND AUX CONTACT POLARIZED? INCLUDE AUX CONTACT? P: Yes No MAIN CONTACT TEST VOLTAGE F: 450 V DC MOUNTING POWER CONNECTION F: Bottom Internal Thread COIL VOLTAGE 12: 12 V DC 24: 24 V DC 48: 48 V DC