| Parameter | Value |
|---|---|
| Model | GVB35-BAB (unit nameplates: GVB351-BAB / -CAB series) |
| Brand | GIGAVAC · units marked Made in China |
| Pole / Phase | 1 pole (SPST-NO) - see note on "three phase" labeling in FAQ |
| Contact Arrangement | Main: SPST-NO · Auxiliary: SPST-NO |
| Rated Voltage | DC 1000V |
| Nominal Current | 500A |
| Breaking Capacity | 6,000 cycles @ 1000VDC / 80A |
| Electric Life - Break | 6,000 @1000VDC/80A · 20 @1000VDC/250A · 100 @850VDC/300A · 300,000 @450VDC/20A |
| Electric Life - Make | 300,000 @10VDC/50A · 1,000 @450VDC/1350A |
| Max. Break Current (1 cycle) | ±2000A @400V · ±500A @1000V |
| Short-Circuit Withstand | 20 ms @ 4,000A |
| Mechanical Life | 300,000 cycles |
| Contact Resistance | Max 0.2 mΩ |
| Control Coil | Dual DC coil: 12 / 24 / 48 VDC (units pictured: 12VDC BAB · 24VDC CAB), built-in coil suppression |
| Dielectric Withstand (sea level, leakage <1mA) | 4000V AC |
| Insulation Resistance | 100 MΩ @ 1000VDC |
| Environmental Seal | IP67 & IP69K · Salt fog per MIL-STD-810 |
| Shock (1⁄2 sine, 11ms) | 50G (actuated/closed) · 25G (non-actuated/open) |
| Vibration (sinusoidal, 10-2000Hz peak) | 25G |
| Temperature (per datasheet) | Operating -55~+85°C · Storage -70~+150°C |
| Weight / Mounting | Approx. 0.44 kg · any mounting position (M5/No.10 screws, 1.7-4Nm) |
 Top view - two silver-plated M8×1.25 power terminals (T1/T2) with coil leads; side view shows the sealed cylindrical chamber and flange base |
| Advantage | Benefit for Your Application |
|---|---|
| ✅ Hermetically Sealed, IP67 & IP69K | Ceramic-to-metal sealed switching chamber - no position sensitivity, any mounting orientation, and full protection against dust, high-pressure and high-temperature washdown (IP69K). |
| ✅ Suppression Gas Arc Management | The suppression gasfill enables high fault-interrupt capability, prohibits contact oxidation, cools the arc and breaks current rapidly - resulting in higher system efficiency and less heat generation. |
| ✅ 1000V / 500A at the Workpoint | Rated 500A continuous on 400MCM busbars with max 0.2mΩ contact resistance, 20ms @4,000A short-circuit withstand, and make ratings up to 1,350A - headroom for inrush-heavy EV charging and storage loads. |
| ✅ High-Efficiency Dual DC Coils | Very low continuous coil power at 12, 24 or 48VDC with no EMI emissions or cross-talk on your system control power - ideal for battery-powered systems, with built-in coil suppression saving engineering time and parts cost. |
| ✅ Ruggedized for Mobile Duty | 50G shock (actuated) / 25G vibration endurance, -55~+85°C operating window, salt-fog tested per MIL-STD-810 - built for forklifts, special mobility vehicles and outdoor energy storage cabinets. |
| ✅ Certified Platform | UL 60947-4-1, CE and CCC certifications streamline acceptance in EV charging, storage and industrial equipment. |
 Current carry vs time - 500A continuous (400MCM busbar, 85°C terminal rise); short-time ratings up to 4,000A |  Dimensions - 68.3×80.5mm flange, Ø60mm body, 72.4mm height; silver-plated copper M8×1.25 terminals (10Nm max), M5/No.10 mounting screws (1.7-4Nm), red/black coil leads X1(+)/X2(−), blue/white auxiliary leads (B = SPST-NO) |
Typical duty points for the GVB35 across high-voltage DC systems.
DC Fast Charging Main contactor in DC fast-charge stations and charging piles up to 1000V DC | Energy Storage Systems Battery cluster and DC bus switching where 4000A short-circuit withstand and IP67/IP69K sealing are critical | Battery Electric Special Mobility Forklifts, AGVs, aerial platforms and special electric vehicles exposed to shock, vibration and washdown |
| Item | Detail |
|---|---|
| Brand / Origin | GIGAVAC brand · units marked Made in China |
| Ordering Model | GVB35-BAB (unit series nameplate GVB351-BAB/CAB) - 1-pole SPST-NO + SPST-NO auxiliary, DC1000V / 500A, breaking 6,000 cycles @1000VDC/80A |
| Coil Options | Dual DC coil 12 / 24 / 48 VDC (pictured units: 12VDC BAB, 24VDC CAB) with built-in coil suppression |
| Certification | UL 60947-4-1 · CE · CCC · Salt fog MIL-STD-810 |
| Packing | Anti-static bag + molded tray, 24 units per shipping box |
| MOQ | 1 pc |
| Lead Time | Typically 7-15 days (confirm with sales) |
| Payment | T/T, Trade Assurance, etc. (confirm with sales) |
| Warranty | 1 year |
 Units in molded shipping tray - A1(+)/A2(−) power terminals protected |  Anti-static bag + carton packing as shipped |
Q1. Is this contactor suitable for switching at full 1000V under load?
A: Yes - the published breaking capacity is 6,000 cycles at 1000VDC/80A, and 20 cycles at 1000VDC/250A. The one-cycle maximum break rating is ±500A at 1000V (±2000A at 400V). Share your load profile for a life estimate.
Q2. What coil voltages are available?
A: High-efficiency dual DC coils in 12, 24 or 48VDC, all with built-in coil suppression. The pictured units are 12VDC (BAB) and 24VDC (CAB). Low continuous coil power means no EMI emissions or cross-talk on your control power.
Q3. What does IP67 & IP69K sealing cover?
A: The switching chamber is hermetically sealed (ceramic-to-metal), protecting the contacts from dust, water, high-pressure and high-temperature jet washdown - and the contactor can be mounted in any position.
Q4. The listing says "three phase" - is this a 3-pole contactor?
A: No. The unit is a 1-pole (SPST-NO) DC contactor per the parameter table and nameplate drawings. The "three phase / 1P" wording in the title refers to the sourcing listing, not the contact architecture - treat it as a single-pole high-voltage DC contactor.
Q5. What are the mounting and termination requirements?
A: Per the datasheet drawing: silver-plated copper M8×1.25 power terminals torqued to 10Nm (90 in-lb) max, M5 or No.10 mounting screws at 1.7-4Nm, Ø60mm body with 68.3×80.5mm flange, red/black coil leads X1(+)/X2(−) and blue/white auxiliary leads.
Q6. How does it survive harsh environments?
A: 50G shock (actuated) / 25G open, 25G vibration from 10-2000Hz, salt fog per MIL-STD-810, -55~+85°C operating temperature, and IP67/IP69K sealing - suitable for forklifts, special mobility vehicles and outdoor energy-storage cabinets.
