C8P-10A High Voltage DC Contactor

Product Introduction

The BSB C8P-10A high voltage DC contactor is a compact, ceramic-sealed high voltage DC contactor designed for low-current control circuits in photovoltaic systems and energy storage applications. With a 10A continuous current rating and rated for up to 1500VDC, the C8P-10 is ideal for auxiliary switching, signal protection, and low-load disconnection in DC power environments. Its high insulation strength, fast actuation time, and sealed structure make it reliable even in harsh conditions.

Product Features

• High Voltage Capability: Supports switching up to 1500VDC for PV and ESS systems.

• Compact & Fully Sealed: Ceramic hermetic sealing ensures zero arc exposure and long-term insulation reliability.

• Durable Load Endurance: Withstands up to 200A breaking (1 op), and supports short-term overloads of 80A/15s and 120A/6s.

• Quick Response: Operate time ≤30ms, release time ≤10ms, bounce ≤5ms.

• Flexible Mounting Options: Available in PCB or QC termination, with or without mounting bosses.

• No Polarity Design: Load and coil sides are both non-polar for easy installation.

Typical Applications

• Photovoltaic inverter auxiliary switching

• DC circuit disconnect for battery racks

• Energy storage system BMS signal control

• Solar string protection circuits

• DC low-load relay isolation

Summary of Technical Parameters

Dimensional Drawing & Wiring Diagram

Plug-in type with mounting feet

Welded type

Wiring Diagram

FAQs About The BSBC8P-10A High Voltage DC Contactor

Q1: Does C8-10a high voltage dc contactor require polarity alignment during installation?
A2: No. Both the load and coil circuits are non-polar.

Q2: Can this relay be used for string-level disconnect in 1500V PV systems?
A2: Yes. The C8P-10 supports up to 1500VDC and is suitable for auxiliary or signal circuit switching at that voltage level.

Q3: Is it suitable for continuous high-frequency switching?
A3: While rated for 10,000–20,000 operations depending on voltage, this relay is optimized for infrequent but high-reliability switching.

Q4: How many installation methods are available for this product?
A4: This product offers plug-in and welded installation methods.

Precautions for Use

To ensure safe, stable, and long-term operation of the C8P-10A high voltage DC contactor, please follow the instructions below:

Mechanical Installation

• Always use flat and spring washers during installation to prevent loosening.

• When using M5 screws, maintain a tightening torque of 3–4 N·m to avoid deformation and cracking of the housing.

• The maximum allowable force for terminal insertion or removal is:

  • Load terminals: 49N

  • Coil terminals: 49N Exceeding this may cause damage.

Wiring and Soldering

• Use wires ≥2 mm² for all connections.

• Manual Soldering: 380 ± 20°C for 3–5 seconds

• Wave Soldering: 265 ± 5°C for 3–5 seconds

• Do not allow grease or foreign matter on the terminals to prevent localized overheating.

Electrical Load Handling

• For inductive loads (L/R ≥1ms), always use parallel surge suppression devices (e.g., TVS or varistors) to protect the contactor from premature failure.

• For capacitive loads, implement a pre-charge circuit, and limit the closing voltage difference to ≤20V to avoid contact welding.

• For models without economizer, do not use diodes as coil suppressors. Use varistors or TVS instead, as diodes significantly increase release time and reduce disconnection performance.

Environmental Conditions

• Operating temperature range: -40°C to +85°C

• Avoid prolonged use above rated temperature, as internal gas pressure may rise and affect contact performance.

• Do not install the relay near strong magnetic fields (e.g., transformers or magnets) to avoid electrical interference.

• Do not install near heat sources (e.g., fuses, shunts), as this may cause excessive heating at the contact ends.

Handling and Storage

• Avoid storing the contactor in locations with corrosive gas or direct sunlight.

• Storage temperature: -40°C to +85°C

• Humidity range: 5%–85% RH

• Shelf life: 12 months in original packaging

• Do not reuse the contactor if dropped, even if no visible damage is present.

Compliance and Responsibility

• BSB products are RoHS compliant.

• All performance data are based on standard test conditions and are initial values.

• It is the customer’s responsibility to select the appropriate product for their specific application. Contact BSB for support if needed.

• BSB reserves the right to make changes; confirm the specification before ordering.

Others

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