C8V-200B

C8P-150A High Voltage DC Contactor

The BSBC8P-150A high voltage DC contactor is engineered for reliable operation in 1000VDC solar and battery storage systems. With a ceramic sealed chamber and 150A continuous current rating, it ensures arc-free switching in harsh environments. Whether used in PV string isolation, inverter-side pre-charge, or BESS disconnection, this high-voltage DC relay offers compact performance, fast switching, and proven electrical endurance in energy-critical applications.

  • Rated current: 150A
  • Rated voltage: 750VDC
  • Coil operation voltage: 12VDC, 24VDC
  • Main contact type: SPST-NO
  • Certifications: UL
  • Specification:

Product Introduction

The BSB C8P-150A high voltage DC contactor is a robust 150A high voltage DC contactor specifically engineered for photovoltaic (PV) and energy storage systems (ESS). It features a ceramic sealed gas-filled chamber, ensuring arc-free switching, extended endurance, and superior insulation. With a 1000VDC voltage rating and 1000A peak breaking capacity, this contactor is ideal for use in string protection, battery switching, and large inverter auxiliary circuits.

Product Features

  • High Voltage Support: Rated for up to 1000VDC, suitable for high-power PV/ESS environments.

  • Heavy Current Handling: 150A continuous current, with peak breaking up to 1000A @ 800VDC.

  • Gas-Sealed Ceramic Design: Offers excellent arc suppression and prevents contamination or condensation.

  • Fast Switching: Operate time ≤30ms, release time ≤10ms, bounce time ≤5ms.

  • Electrical Endurance:

    • 150A @ 450VDC breaking: 1000 ops

    • 150A @ 1000VDC breaking: 500 ops

    • 150A @ 37.5VDC making: 20,000 ops

  • Durable Construction: Designed for 200,000 mechanical cycles and wide environmental tolerance.

Typical Applications

  • String-level switching in commercial PV arrays

  • High-voltage battery switching and safety disconnects

  • Inverter-side pre-charge switching in BESS

  • Hybrid solar + energy storage safety systems

  • Fault-current isolation and protection circuits

Summary of Technical Parameters

Parameter Value
Rated Current 150A (≥50 mm² wire)
Rated Voltage 12–1000VDC
Max Breaking Current 1000A @ 800VDC (1 op)
Contact Type SPST-NO (1 Form A)
Contact Resistance ≤0.5 mΩ @ 150A
Operate Time ≤30 ms
Release Time ≤10 ms
Bounce Time ≤5 ms
Electrical Life 1000 ops @ 150A 450VDC, 500 ops @ 150A 1000VDC
Mechanical Life 200,000 ops
Coil Voltage Options 12VDC / 24VDC
Coil Resistance 24Ω / 96Ω ±7%
Power Consumption Approx. 6W
Dielectric Strength 3000VAC (contacts), 4000VAC (coil-to-contact)
Insulation Resistance ≥1000 MΩ @ 1000VDC
Max Contact Temp 130°C continuous / 180°C short-time
Operating Temp -40°C to +85°C
Vibration & Shock 49 m/s² vibration, 98/490 m/s² shock
Mounting Orientation Vertical
Weight Approx. 350g ±15g

Dimensional Drawing & Wiring Diagram

C8P-150A high voltage DC contactor dimensional drawing

C8P-150A high voltage DC contactor dimensional drawing

FAQs About The BSBC8P-150A High Voltage DC Contactor

Q1: Can the C8P-150A high voltage DC contactor be used in 1000V photovoltaic systems?
A1: Yes. The C8P-150A is rated for up to 1000VDC and is designed for use in high-voltage PV arrays, inverter switching, and energy storage systems.

Q2: What is the maximum current this contactor can handle?
A2: It supports 150A continuous current, with a maximum breaking current of 1000A at 800VDC (single operation).

Q3: Does the C8P-150A require polarity alignment?
A3: The coil side is non-polar, so wiring is flexible. However, the load side has a polarity requirement. Please ensure correct wiring at the main terminals for proper operation.

Precautions for Use

To ensure safe and long-lasting operation of the C8P-150A, please observe the following precautions:

Mechanical Installation

  • Always use flat and spring washers to prevent loosening.

  • Mounting torque requirements:
    – Load terminal (M6 screw): 5–6 N·m
    – Body installation (M5 screw): 3–4 N·m

  • Follow recommended copper bar thickness and hole size to avoid thread damage or loose connections.

Surge and Load Management

  • For inductive loads (L/R ≥1ms), always add parallel surge suppression devices (e.g., varistors, TVS) to maintain electrical life.

  • For capacitive loads, use a pre-charge circuit. Keep closing voltage difference ≤20V to prevent contact sticking.

  • For models without economizer, use TVS/varistor for coil suppression.
    ⚠️ Do not use diodes as they increase coil release time and reduce breaking performance.

Thermal and Environmental Guidelines

  • Internal contacts are gas-filled and sealed; avoid exceeding temperature range –40°C to +85°C, as this may cause gas leakage and insulation degradation.

  • Do not install near heat-emitting components (e.g., fuses, shunts) or strong magnetic fields (e.g., transformers, magnets).

  • Avoid installing where grease or debris may contact terminals, as this may cause abnormal heat rise.

Handling and Storage

  • Do not reuse the contactor if dropped or physically damaged.

  • Storage temperature: –40°C to +85°C; Humidity: 5%–85% RH

  • Store away from corrosive gases and direct sunlight.

  • Shelf life: 12 months in original packaging.

Others

    Scroll to Top

    Schedule a chat

    Fill out the form below, and we will be in touch shortly.

    Contact Information
    Product Information