Product Introduction
The BSBC8V-150 is a high-performance 150A high voltage DC contactor designed for use in electric vehicle (EV) applications. Rated for 1000VDC, it provides exceptional arc-free switching, ceramic-sealed durability, and superior performance in high-current circuits. This contactor is ideal for battery disconnect units (BDU), inverter switching, and pre-charge circuits, ensuring safe and reliable operation in EV powertrains.
Product Features
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Rated for 150A Continuous Current at 1000VDC – Ensures safe operation for high-power EV applications.
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Ceramic Sealed Design – Offers arc suppression and moisture protection, extending contactor life.
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Short Circuit Resistance – Handles up to 1000A at 800VDC (1 operation).
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Overload Tolerance –
– 180A for 2 hours
– 225A for 15 minutes
– 320A for 2 minutes
– 600A for 20 seconds
– 900A for 8 seconds -
Fast Switching – Operate time ≤30ms, release time ≤10ms, bounce ≤5ms.
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Auxiliary Contact Available – Optional for feedback control and logic circuits.
Typical Applications
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Battery Disconnect Units (BDUs) for EV battery systems
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Pre-charge control for high-voltage EV systems
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Inverter switching and traction motor protection
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Fast charging system switching
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High-voltage load isolation in hybrid and fully electric vehicles
Summary of Technical Parameters
| Parameter | Value |
|---|---|
| Model | BSBC8V-150 |
| Rated Current | 150A (≥50 mm² wire) |
| Rated Voltage | 12–1000VDC |
| Max Breaking Current | 1000A @ 800VDC (1 op) |
| Electrical Life | – 150A @ 20VDC: 75,000 ops – 150A @ 450VDC: 1,000 ops – 150A @ 1000VDC: 500 ops |
| Mechanical Life | 200,000 operations |
| Coil Voltage Options | 12VDC / 24VDC (single coil) |
| Coil Resistance | 24Ω (12V) / 96Ω (24V) |
| Power Consumption | Approx. 6W |
| Operate / Release Time | ≤30ms / ≤10ms |
| Bounce Time | ≤5ms |
| Insulation Resistance | ≥1000 MΩ @ 1000VDC |
| Dielectric Strength | 3000VAC (coil-to-contact) |
| Vibration Resistance | 49 m/s² (10–55Hz) |
| Shock Resistance | 196 m/s² (functional), 490 m/s² (destructive) |
| Operating Temp | -40°C to +85°C |
| Mounting Orientation | Vertical |
| Weight | Approx. 350g ±15g |
Dimensional Drawing & Wiring Diagram
FAQs About The BSBC8V-150A DC Contactor For EV
Q1: Can the BSBC8V-150 handle continuous 1000VDC operation?
A1: Yes, the BSBC8V-150 is rated for continuous 1000VDC operation and is ideal for high-voltage EV systems.
Q2: Does the BSBC8V-150 have auxiliary contacts?
A2: The standard version does not include auxiliary contacts, but they are available in custom configurations.
Precautions for Use
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Installation Torque:
– M6 load terminals: 6–8 N·m
– M5 mounting screws: 3–4 N·m -
Inductive Load Protection:
– For L/R ≥1ms, install TVS diodes or varistors to suppress surges. -
Capacitive Loads:
– Implement pre-charge circuits and ensure closing voltage differential is ≤20V to avoid contact welding. -
Coil Protection:
– Avoid using diodes for coil protection; use TVS or varistors to avoid extended release time. -
Operating Temperature:
– –40°C to +85°C; exceeding this range may cause gas leakage inside the contactor. -
Environmental Considerations:
– Avoid installation near strong magnetic fields or heat sources (e.g., fuses).
– Do not use if the contactor has been dropped. -
Storage Conditions:
– 12-month shelf life in original packaging, away from direct sunlight and corrosive gases.