| Parameter | Value |
|---|---|
| Model | HFE80V-40 (HONGFA) |
| Designed Application | Vehicle systems (code V) |
| Contact Arrangement | 1 Form A |
| Contact Rating (Ie) | 40A |
| Contact Resistance (initial) | ≤ 5 mΩ (at 20A) |
| Max Switching Voltage | 750VDC |
| Max Breaking Current | 50A (450VDC, ≥1 op) |
| Max Switching Power | 27kW |
| Electrical Endurance | 6,000 ops (450VDC/20A) · 3,000 ops (150VDC/40A) · 1,000 ops (450VDC/40A) |
| Current Carrying Capacity | 40A continuous · 60A/1h · 80A/20min · 160A/30s · 240A/10s · 400A/0.6s |
| Mechanical Endurance | 2 × 10⁶ ops |
| Coil Voltage / Power | 12VDC / 24VDC / 48VDC · 3W (pick-up ≤9V / ≤18V / ≤36V, drop-out ≥1V / ≥2V / ≥4V) |
| Insulation / Dielectric | 1000MΩ (500VDC) · 3000VAC 1min (coil–contacts) · 2000VAC 1min (open contacts) |
| Operate / Release Time | ≤ 30ms / ≤ 10ms (at rated voltage) |
| Shock / Vibration Resistance | 196 m/s² functional · 490 m/s² destructive · 10–500Hz 49 m/s² |
| Ambient Conditions | -40°C ~ +85°C · 5%–85% RH |
| Contact Material / Terminal | AgSnO₂ · QC or PCB terminal (load #250 tab · coil #187 tab) |
| Dimensions / Weight | 30.1 × 30.0 × 29.2 mm · approx. 51 g |
| Certification | UL · CUL · VDE · TÜV · CQC |
| Warranty | 1 year |
 Contact / Coil / Characteristics data |  Ordering information |
 Outline dimensions — HTQ2BJ (B-type mounting flange) |  Outline dimensions — HTQ2AJ (standard mounting boss) |
| Advantage | Benefit for Your Application |
|---|---|
| ✅ 750VDC / 40A Rating | Switches up to 750VDC at 40A continuous (27kW) — covers high-voltage auxiliary circuits, small drivetrain and DC distribution loads in one compact relay. |
| ✅ Ultra-Compact & Lightweight | Only 30.1 × 30.0 × 29.2 mm and approx. 51 g — easy to fit into tight PDU, BDU or on-board charger cabinets where space and weight are critical. |
| ✅ Ceramic Brazed Seal | Ceramic–copper–silver hermetic construction with 1000MΩ insulation resistance and 3000VAC dielectric strength — stable in dust, moisture and thermal-cycling environments. |
| ✅ Only 3W Coil Power | 12V / 24V / 48VDC coil options, all just 3W — no economizer module needed; ≤30ms operate time for fast, deterministic switching. |
| ✅ Strong Overload Capability | Carries 160A for 30s, 240A for 10s and 400A for 0.6s, and breaks up to 50A at 450VDC — handles inrush, stall and fuse-clearing events with margin. |
| ✅ Vehicle-Grade & Certified | Vehicle-application design (code V) with AgSnO₂ contacts, 2 × 10⁶ mechanical operations, and UL/CUL/VDE/TÜV/CQC certification. |
UL · CUL · VDE · TÜV · CQC (per HONGFA manufacturer specifications) — certification documents and test reports available on request.
 Electric & Industrial Vehicles Forklifts · Pallet trucks · AGV · Golf carts · Light EVs · Battery packs |  DC Charging Equipment Chargers · DC charging piles · Group charging · Charging modules |
 Energy Storage System Utility-scale ESS · C&I storage · Residential storage · Battery cabinets |  Frequency Conversion Equipment Frequency converters · PCS · Rectifier power supplies |
| Item | Detail |
|---|---|
| Brand / Origin | HONGFA (Xiamen Hongfa Electric Power Controls Co., Ltd.) · China |
| Ordering Code | HFE80V-40/450-12-HTQ2LJ (450VDC load · 12VDC coil · 1 Form A · AgSnO₂ contacts · QC terminals · L-type flange; 24V/48V coil and other load-voltage versions available per ordering rules) |
| 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) |
| Customization | Load voltage (e.g. 450VDC per ordering rules), coil voltage (12/24/48VDC), shell structure (standard boss / A / B / L-type flange) and customer special code (XXX) per HONGFA ordering rules — available on request |
| Warranty | 1 year |
Q1. What is the rated voltage and current?
A: Max switching voltage 750VDC with 40A continuous contact rating and 27kW max switching power — designed for high-voltage DC circuits in vehicle and industrial systems.
Q2. Which coil voltages are available?
A: 12VDC, 24VDC and 48VDC (pick-up ≤9V / ≤18V / ≤36V), all consuming only 3W — direct battery-powered control without an economizer.
Q3. Is it hermetically sealed?
A: Yes. Ceramic brazed seal with ceramic–copper–silver construction provides gas-tight sealing, 1000MΩ insulation resistance (500VDC) and 3000VAC dielectric strength between coil and contacts.
Q4. What is the service life and overload capacity?
A: Electrical endurance up to 6,000 operations at 450VDC/20A; mechanical life 2,000,000 operations. It carries 400A for 0.6s and breaks up to 50A at 450VDC under fault conditions.
Q5. How compact is it?
A: Outline dimensions are just 30.1 × 30.0 × 29.2 mm with an approx. 51 g weight — mounting options include standard boss, A/B/L-type flange, with #250 load tabs and #187 coil tabs.
Q6. Which certifications does it carry?
A: UL, CUL, VDE, TÜV and CQC per HONGFA manufacturer specifications; test reports are available on request.
