Product Introduction
The BSB C8P-80A high voltage DC contactor is a high-performance 80A high voltage DC contactor designed for use in photovoltaic (PV) and energy storage systems (ESS). Featuring a ceramic-sealed structure, it ensures high reliability and insulation resistance in high-voltage environments. The contactor supports up to 750VDC, making it ideal for medium-scale PV systems and energy storage applications. It offers a 200A maximum breaking capacity and fast switching times, ensuring optimal performance in DC power systems.
Product Features
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High Voltage Capability: Rated for up to 750VDC continuous operation, ideal for PV strings and ESS protection.
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Ceramic Sealed Construction: Provides excellent insulation and protection against arc, ensuring durability and long-term performance.
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Current Rating: 80A continuous current and 200A maximum breaking capacity at 450VDC (1 op).
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Fast Switching: Operate time ≤30ms, release time ≤10ms, with bounce time ≤5ms for reliable switching.
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Flexible Coil Options: Available in 12VDC and 24VDC coil voltages.
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Non-Polar Design: Simplifies installation, as both coil and load sides are non-polar.
Typical Applications
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PV String Switching in solar farms and commercial installations
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Energy Storage System (ESS) BMS Protection and disconnect circuits
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Solar Inverter Pre-Charge Control
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Battery Disconnects for large-scale photovoltaic arrays
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Auxiliary Switching for high-voltage solar control systems
Summary of Technical Parameters
| Parameter | Value |
|---|---|
| Rated Current | 80A (≥25 mm² wire) |
| Working Voltage Range | 12–750VDC |
| Max Breaking Current | 200A @ 450VDC (1 op) |
| Contact Type | SPST-NO (1 Form A) |
| Contact Resistance | ≤5 mΩ @ 80A |
| Operate Time | ≤30 ms |
| Release Time | ≤10 ms |
| Bounce Time | ≤5 ms |
| Electrical Life | – 80A 450VDC making: 20,000 ops |
| – 80A 750VDC breaking: 500 ops | |
| – 600A 450VDC breaking: 1 op (0.3s on) | |
| Mechanical Life | 200,000 ops |
| Coil Voltage Options | 12VDC / 24VDC |
| Coil Resistance | 32Ω / 128Ω ±7% |
| Rated Power Consumption | Approx. 4.5W |
| Dielectric Strength | 4000VAC between contacts and between coil & contacts |
| Insulation Resistance | ≥1000 MΩ |
| Vibration Resistance | 49 m/s² (10–55Hz) |
| Shock Resistance | Functional: 98 m/s², Destructive: 490 m/s² |
| Operating Temperature | -40°C to +85°C |
| Mounting Orientation | Vertical |
| Weight | Approx. 165g ±15g |
Dimensional Drawing & Wiring Diagram
FAQs About The BSBC8P-80A High Voltage DC Contactor
Q1: Can the C8P-80A high voltage DC contactor be used for large-scale PV installations?
A1: Yes, it is designed for medium to large-scale PV systems, offering reliable switching for high-voltage strings up to 750VDC.
Q2: What is the maximum current the C8P-80A can switch?
A2: The C8P-80A can switch up to 200A at 450VDC, making it suitable for large energy storage and solar applications.
Q3: Does the C8P-80A support multiple mounting options?
A3: Yes, the contactor is designed for vertical mounting and offers flexible coil and terminal configurations for easy installation.
Q4: Does this model have a plug-in type installation option?
A4: No, the C8-60 currently only supports the welding installation type.
Precautions for Use
Please follow the guidelines below to ensure optimal operation and safety when using the C8P-80A high voltage DC contactor:
Mechanical Installation
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Use flat washers and spring washers during installation to prevent loosening.
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When using M5 screws, tighten them with a torque of 3N·m–4N·m to avoid cracking or deformation of the ceramic casing.
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Maximum allowable pulling force for terminals:
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Load terminals: 49N
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Coil terminals: 49N Exceeding these limits may cause mechanical damage.
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Soldering Guidelines
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Manual Soldering: 380 ± 20°C for 3–5 seconds
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Wave Soldering: 265 ± 5°C for 3–5 seconds
Electrical Load Handling
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When used with inductive loads (L/R ≥1ms), always use surge suppression measures like varistors or TVS diodes to avoid electrical damage.
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For capacitive loads, ensure a pre-charge circuit is used, and the closing pressure difference is controlled to ≤20V to avoid contact fusion.
Environmental Conditions
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Operating Temperature: -40°C to +85°C
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Storage Temperature: -40°C to +85°C
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Humidity Range: 5%–85% RH
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Storage Life: 12 months in original packaging
Handling and Installation
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Avoid exposing the contactor to strong magnetic fields or placing it near heating objects (e.g., fuses, resistors) as this could affect electrical performance.
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Do not use the contactor if it has been dropped, even if no visible damage is observed.