Product Introduction
The BSBC8P-100A high voltage DC contactor is a 100A high voltage DC contactor specially designed for photovoltaic and energy storage systems. With its ceramic sealed housing, compact form factor, and excellent arc isolation, it enables safe and reliable disconnection of high voltage DC circuits up to 1000VDC. The contactor handles 100A continuous current and offers multiple short-time overload capabilities, making it ideal for pre-charge control, inverter switching, or BMS protection circuits.
Product Features
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High Voltage Handling: Up to 1000VDC switching with excellent insulation strength.
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Heavy Current Capability: Rated for 100A continuous current with 1000A max breaking at 800VDC (1 op).
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Ceramic Sealed Design: Enables arc suppression, long service life, and resistance to external gas or moisture.
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Fast Operation: Operate time ≤30ms, release time ≤10ms, bounce ≤5ms.
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Durable Electrical Life: Over 30,000 operations at 100A 37.5VDC; 500 operations at 100A 1000VDC.
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Compact Build: Approx. 350g; with connector and M6 bolt terminal interface.
Typical Applications
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String-level switching for photovoltaic inverters
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High-voltage battery disconnects in containerized BESS
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Auxiliary switching for 1000V-class solar combiner boxes
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Fast pre-charge relay in PV and ESS logic circuits
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Protection switching in solar + battery hybrid systems
Summary of Technical Parameters
| Parameter | Value |
|---|---|
| Rated Current | 100A (≥35 mm² cable) |
| Rated Voltage | 12–1000VDC |
| Max Breaking Current | 1000A @ 800VDC (1 op) |
| Contact Type | SPST-NO (1 Form A) |
| Contact Resistance | ≤0.5 mΩ @ 100A |
| Electrical Life | 100A @ 37.5VDC: 30,000 ops 100A @ 1000VDC: 500 ops 1000A @ 800VDC: 1 op |
| Mechanical Life | 200,000 ops |
| Coil Voltage | 12VDC / 24VDC |
| Coil Resistance | 24Ω / 96Ω ±7% |
| Power Consumption | Approx. 6W |
| Dielectric Strength | ≥3000VAC (contacts), ≥4000VAC (contact-coil) |
| Insulation Resistance | ≥1000 MΩ @ 1000VDC |
| Max Contact Temp | 130°C continuous / 180°C short-time |
| Shock / Vibration | 98m/s² (functional), 490m/s² (destructive), 49m/s² (vibration) |
| Operating Temp Range | -40°C to +85°C |
| Mounting Orientation | Vertical |
| Weight | Approx. 350g ±15g |
Dimensional Drawing & Wiring Diagram
FAQs About The BSBC8P-100A High Voltage DC Contactor
Q1: Can the C8P-100A high voltage DC contactor be used in 1000V solar systems?
A1: Yes. It supports up to 1000VDC operating voltage and is certified for 1000A disconnection under high fault current conditions.
Q2: What kind of protective features are included?
A2: The sealed ceramic chamber ensures no arc leakage. For surge protection, external TVS/varistors are advised if no economizer is present.
Q3: Is there a polarity requirement for wiring?
A3: No. The coil side is non-polar, simplifying installation.
Precautions for Use
Please follow the operational guidelines below to ensure long-term performance and electrical safety of the C8P-100A contactor:
Mechanical Installation
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Always install with flat washers and spring washers to prevent loosening.
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For load terminals (M6 bolts), use a torque of 5–6 N·m; for body mounting (M5 screws), apply 3–4 N·m.
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Follow recommendations for copper bar thickness and hole diameter to ensure firm electrical contact and prevent thread damage.
Load & Surge Conditions
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For inductive loads (L/R ≥ 1ms), always install parallel surge absorption devices (TVS or varistor) to prevent contact damage or life reduction.
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For capacitive loads, use a pre-charge circuit and keep the closing voltage differential ≤20V to avoid contact welding.
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For models without economizer, avoid using a diode for back EMF suppression. Use TVS or varistor instead to maintain quick release and proper disconnection.
Thermal Considerations
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The internal contact chamber is gas sealed. Exposure to temperature >85°C for long durations may result in gas leakage and insulation degradation.
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Do not mount the contactor near strong heat sources such as fuses or shunt resistors.
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Perform thermal validation tests if installation in such environments is unavoidable.
Environmental Guidelines
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Operating temperature: –40°C to +85°C
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Storage temperature: –40°C to +85°C; humidity: 5%–85% RH
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Avoid locations with condensation, icing, direct sunlight, or corrosive gases.
Installation Position & Handling
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Install vertically as specified.
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Avoid placing near strong magnetic fields (e.g., transformers, magnets) which may interfere with internal coil and contact behavior.
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Do not reuse if the product has been dropped or physically damaged.