Name: DC Contactor GVB351-BAB 1000VDC 500A
Brand: Beian New Energy | Lithium Battery, ESS System, DC Contactor Supplier

Description

Bi-Directional 1000V DC Rated Current ±500A SPST-NO-DM Dual Coil 12/24/48Vdc

Technical Specifications

Parameter	Value
Model	GVB351-BAB
Brand	GIGAVAC
Type	Bi-Directional DC switching (±)
Rated Load Voltage	1000VDC
Rated Load Current	500A
Coil Voltage	DC12V / DC24V / DC48V
Contact Arrangement	Main: SPST-NO · Auxiliary: SPST-NO
Mechanical Life	300,000 cycles
Contact Resistance (Max)	0.2 mΩ
Insulation Resistance	100 MΩ @ 1000VDC
Dielectric Strength	4000VAC
Shock (½ Sine, 11ms)	Actuated (closed): 50G · Non-actuated: 25G
Vibration (10–2000Hz)	25G
Environmental Seal	IP67 & IP69K
Short Circuit Withstand	20 ms @ 4,000A
Max. Break Current @ 400V (1 cycle)	±2000A
Max. Break Current @ 1000V (1 cycle)	±500A
Salt Fog	MIL-STD-810
Certification	CE / CCC, UL 60947-4-1

Product Details

DC Contactor GVB351-BAB 1000VDC 500A — overview

GVB351-BAB dimensional drawing and technical parameters

GVB351-BAB internal structure and wiring diagram

Key Advantages

Feature	Benefit
✓ True Bi-Directional Switching	Breaks up to ±2000A @ 400V and ±500A @ 1000V — handles current in both directions for charge/discharge and V2G/V2X systems.
✓ High-Efficiency Dual DC Coils	Very low 12/24/48 VDC coil power, no EMI or cross-talk — ideal for battery-powered systems.
✓ Arc-Suppression Gas	High fault-interrupt capability, rapid arc cooling, higher system efficiency and less heat.
✓ Built-In Coil Suppression	Saves engineering time and parts cost by removing external coil suppression.
✓ Not Position-Sensitive	Can be mounted in any position for easy installation in tight enclosures.
✓ IP67 & IP69K Sealed	Withstands dust, water and high-pressure washdown for harsh vehicle / outdoor use.

Certifications

CE / CCC · UL 60947-4-1

GVB351-BAB meets CE/CCC and UL 60947-4-1 standards. Test reports and certificates are available on request from our Download center.

Product Applications

Application	Description
⚡ EV DC Fast Charging	Connect/disconnect up to 1000VDC in high-power charging piles and DC fast chargers.
🔋 Energy Storage Systems	Battery pack switching for grid-tied / off-grid ESS and BESS cabinets, including bidirectional charge/discharge paths.
🚚 Battery Electric Mobility	Suitable for AGV, forklifts, electric trucks and special-purpose electric vehicles.

Ordering & Factory Info

Item	Detail
Model	GVB351-BAB (Bi-Directional)
Brand / Origin	GIGAVAC · Jiangsu, China
MOQ	Flexible — contact sales for sample & volume pricing
Lead Time	4–6 weeks
Payment	T/T, Trade Assurance, etc. (confirm with sales)
Customization	OEM coil voltage options (12V / 24V / 48V) and auxiliary arrangements available
Warranty	1 year

Frequently Asked Questions

Q1. What is the rated voltage and current?

The GVB351-BAB is rated for 1000VDC / 500A and supports true bidirectional current flow (±), suitable for high-power EV charging, energy storage and battery test systems.

Q2. Which coil voltages are available?

Standard dual-coil options are DC12V, DC24V and DC48V. Other coil voltages can be discussed with our engineers.

Q3. What is the IP rating?

GVB351-BAB is sealed to IP67 and IP69K, protecting against dust, water jets and high-pressure washdown.

Q4. What certifications does it carry?

CE/CCC and UL 60947-4-1. Certificates and test reports are available on request.

Q5. What are the MOQ and lead time?

MOQ is flexible for samples and trial orders. Standard lead time is typically 4–6 weeks; confirm with sales for exact schedule.

Q6. What is the difference from the unidirectional GVB351-CAB?

The GVB351-BAB supports bidirectional (charge and discharge) current switching up to ±500A @ 1000VDC, ideal for V2G, V2X and bidirectional ESS applications, while the GVB351-CAB is designed for single-direction DC switching.