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| Contact type | One pair of bridge type Normal open (NO) contacts | Insulation resistance(MΩ) | ≥100 | ||
| Rated voltage of contacts (DC) | 750V,50A | Dielectric withstand voltage | between contacts and coil | 2200VAC, 50Hz, 1min, no breakdown | |
| Voltage drop on contacts(mV) | ≤100 | Between contacts | |||
| Pickup voltage(DC) | ≤75%Us | Rated load electrical life | 900V,30A | ≥2000 times | |
| Release voltage(DC) | ≤7.0 | 750V,50A | ≥2000 times | ||
| Pickup time(ms) | ≤30 | 450V,50A | ≥5000 times | ||
| Release time (ms) | ≤20 | Max breaking current (A) | 500A,(320VDC) 1 times | ||
| Instantaneous maximum current | 350A，≤1s | Mechanical life (10k) | ≥30 | ||
| Coil voltage specification (DC) | (9-36)V | Temperature rise on outgoing terminal (K) | ≤65 | ||
| DC power consumption of coil | start current | ≤1.0 | Temperature rise of coil (K) | ≤85 | |
| standby power | ≤4.0W | Material of contact | AgCuO(10) | ||
| Acting frequency | ≤1Hz | Working duty | Continuous | ||
| Mechanical/Ambient Conditions | |||||
| Torque of outgoing terminal on contact M5 (N.m) | ≯5.5 | Protection grade | IP67 | ||
| Leading mode of coil | High temperature insulated multiple-stranded CU wire | Mounting methods | Freely | ||
| Working temperature | (-40～＋85)℃ | Vibration | Sine shock, 2.5g, (5～50) Hz | ||
| Mounting altitude | ≤2Km | Impact | 50g，11ms (Half sine) | ||
| Coil Specification (20℃) | |||||
| Coil voltage (V) | Coil resistance (1±10%) Ω | ||||
| (9-36) | 6.0 | ||||
UKD50H Fully Sealed High Voltage DC Contactor 50A 9-36V
UKD-H series High Voltage DC Contactor is primarily designed for reliable power switching control in critical DC power systems. Its key applications include electric buses, electric vehicles (EVs), EV charging piles, automotive air conditioning units, and telecom power equipment. It serves as a vital component for safely managing high-voltage DC circuits.
Free Quote NowKey Features
- Sealed with high-strength epoxy resin to eliminate arc leakage risk, ensuring no fire or explosion throughout its service life.
- Filled with nitrogen-based gas to prevent contact oxidation and burning, ensuring low and stable contact resistance.
- The contact area meets IP67 protection standard
- Dual coil high voltage DC contactor with Energy-Saving PCB
Applications
- Electric Buses & Electric Vehicles (EVs)
- EV Charging Piles / Stations
- Automotive Air Conditioning Systems
- Telecom Power Supplies
- Power Switching Control in DC Power Systems.
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