| Parameter | Value |
|---|---|
| Model | HFE82V-400M |
| Brand / Origin | HONGFA (Xiamen Hongfa Electric Power Controls) · China |
| Contact Arrangement | 1 Form A (SPST-NO) |
| Load Voltage | DC 450V / 750V variants · max switching 800VDC |
| Contact Rating | 400A (continuous) |
| Max Breaking Current | 2000A @ 450VDC (1 operation) |
| Max Switching Power | 360 kW |
| Contact Resistance | ≤ 0.25mΩ (typ. 0.15mΩ @ 400A) |
| Current Carrying Capacity | 400A cont. · 500A/2000s · 1350A/15s · 2000A/10s · 3000A/5s |
| Control Coil | DC 12V or 24V · 6W · pick-up ≤9V / ≤18V · drop-out ≥1V / ≥2V |
| Operate / Release Time | ≤ 50ms / ≤ 10ms (at rated voltage) |
| Mechanical Endurance | 2 × 106 operations |
| Electrical Endurance (typ.) | 7.5×104 ops (450VDC 5A) · 3×103 ops (450VDC 200A) · 1×103 ops (450VDC 400A) · 100 ops (800VDC 400A) |
| Insulation Resistance | 1000MΩ @ 1000VDC |
| Dielectric Strength | 3000VAC 1min (coil-contacts / open contacts) |
| Ambient / Humidity | -40 ~ +85°C · 5% ~ 85% RH |
| Material / Terminals | Ceramic · copper · silver · M6 screw terminal (female) |
| Dimensions / Weight | 95.8 × 49.0 × 93 mm · approx. 740g |
| Certification | UL · CUL · VDE · TÜV · CQC |
 Bottom view - two M6 screw terminals (female) for busbar or lug connection |  Side view - sealed housing with automotive-grade coil connector and flange mounting |
 Outline dimensions - 95.8 × 49.0 × 93mm envelope with M6 terminals, 3×Ø7 mounting holes and coil connector position |  Datasheet - contact data, electrical endurance by load, current carrying curves, coil data and characteristics |
| Advantage | Benefit for Your Application |
|---|---|
| ✅ 400A Continuous, 360kW Switching | Handles full vehicle and storage load currents continuously, with 360kW max switching power and short-time overload up to 3000A for 5 seconds. |
| ✅ 450V / 750V Load Voltage Platforms | One contactor family covers 450V and 750V battery systems (up to 800VDC switching) - matching mainstream EV, bus and heavy-machinery voltages. |
| ✅ Ceramic Hermetic Sealing | Ceramic · copper · silver construction with a hermetically sealed chamber - no external gas exchange, stable contact resistance ≤0.25mΩ over life. |
| ✅ 2000A Breaking Capability | Emergency breaking of 2000A at 450VDC in a single operation provides a last-line safety disconnect for fault conditions. |
| ✅ Low-Power 6W Coil, 12/24V Options | 6W coil with clear pick-up (≤9V / ≤18V) and drop-out (≥1V / ≥2V) windows keeps BMS auxiliary supplies comfortable in 12V and 24V vehicles. |
| ✅ Certified, Automotive-Grade Platform | UL · CUL · VDE · TÜV · CQC certified vehicle-type (V) contactor with 2×106 mechanical operations, built by Xiamen Hongfa - the world's largest relay maker. |
Typical switching duty for the HFE82V-400M in high-voltage DC systems.
EV & Commercial Vehicles Main circuit and load switching in passenger EVs, buses, trucks and construction machinery (vehicle-type design) | Battery Packs & Energy Storage Battery disconnect and main contactor duty in 450V/750V-class packs and ESS containers | Charging & DC Distribution DC output switching and distribution protection in charging stations and high-voltage DC panels |
| Item | Detail |
|---|---|
| Brand / Origin | HONGFA - Xiamen Hongfa Electric Power Controls Co., Ltd. · China |
| Ordering Model | HFE82V-400M - 400A, load voltage 450VDC (Nil) or 750VDC (750-), coil 12VDC or 24VDC, 1 Form A, connector coil terminal, M6 screw female load terminal, single coil |
| Configurable Options | Load voltage: 450VDC / 750VDC · coil voltage: 12VDC / 24VDC · customer special code (XXX) on request |
| Companion Models | HONGFA HFE82V family on this site: HFE82V-60 (450/750V 60A) · HFE82V-250C (250A) · HFE82V-600 (600A) - one family for pre-charge, main and high-current roles |
| MOQ | Flexible - contact sales for sample & volume pricing |
| Lead Time | Typically 7-15 days (confirm with sales) |
| Payment | T/T, Trade Assurance, etc. (confirm with sales) |
| Warranty | 1 year |
Q1. What is the difference between the 450V and 750V versions?
A: The load voltage is selected in the ordering code (Nil = 450VDC, 750- = 750VDC); both keep the 400A rating and 360kW switching power, while max switching voltage is 800VDC. A 1000VDC variant of the HFE82V-400 family also exists - contact us if your system runs at 1000V.
Q2. Is this a single-pole or multi-pole contactor?
A: The contact arrangement is 1 Form A (SPST-NO) - one main switching gap rated 400A continuous. The terminal block carries both load studs plus the coil connector in one compact 95.8 × 49.0 × 93mm body.
Q3. How much can it break, and how long does it last?
A: It can break 2000A at 450VDC once as an emergency backstop. For endurance: 7.5×104 ops at 450VDC/5A, 3×103 ops at 200A, 1×103 ops at 400A, 100 ops at 800VDC/400A, plus 2×106 mechanical operations - see the endurance table image above for the full breakdown.
Q4. What overload currents can it carry?
A: 400A continuously, 500A for 2000s, 1350A for 15s, 2000A for 10s and 3000A for 5s - covering inrush and short-circuit ride-through events in drivetrains and storage systems.
Q5. What coil options and control characteristics apply?
A: DC 12V or 24V coil at 6W. Pick-up voltage ≤9V (12V coil) / ≤18V (24V coil), drop-out ≥1V / ≥2V, operate time ≤50ms and release time ≤10ms at rated voltage, with a standard automotive connector for the coil terminal.
Q6. How rugged is it in vehicle environments?
A: Rated -40~+85°C ambient and 5~85% RH, with functional shock resistance of 98m/s2 (closed) / 196m/s2 (open), destructive 490m/s2, and vibration resistance of 49m/s2 over 10Hz~500Hz. Ceramic hermetic sealing keeps the contact chamber isolated from dust and condensation.
