ABB DS951-A Residual Current Circuit Breaker

We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

1. Product Overview

The ABB DS951-A Residual Current Circuit Breaker (RCCB) is a critical protective device for low-voltage distribution systems, designed to ensure personal safety and equipment protection. It quickly disconnects the power supply in case of leakage current, preventing electric shocks and fire hazards.

The DS951-A series features a compact design for easy installation and maintenance, suitable for residential, commercial, and industrial electrical safety applications.

2. Technical Specifications (Typical)

• Model: DS951-A

• Type: Residual Current Circuit Breaker (RCCB)

• Poles: Single-pole (1P+N) or Double-pole (2P)

• Rated Current: 16 A / 25 A / 40 A / 63 A (depending on model)

• Rated Voltage: AC 230/400 V

• Rated Residual Operating Current (Leakage Tripping Current): 30 mA / 100 mA / 300 mA (optional)

• Tripping Type: AC type (AC leakage protection)

• Breaking Capacity: 6 kA (AC, typical)

• Mechanical Life: ≥ 10,000 operations

• Operating Temperature: -5 °C to +40 °C

• Mounting: 35 mm DIN rail

• Housing Material: Flame-retardant engineering plastic

• Indicators: On/Off status

3. Advantages & Features

✔ Reliable leakage protection for personnel and equipment safety
✔ Compact modular design for DIN rail installation, easy replacement and maintenance
✔ High durability with flame-retardant housing and long mechanical lifespan
✔ Flexible options for rated current and residual operating current
✔ Clear status indication for easy operation and maintenance

4. Typical Applications

• Residential low-voltage distribution protection
• Commercial building and office power systems
• Industrial facility electrical equipment protection
• Power distribution panels and control cabinets
• Lighting and power equipment leakage protection
• Factory production line safety power protection

5. Installation & Operation Notes

• Match rated current and residual current with load and environment requirements
• Install in suitable environment avoiding high temperature, humidity, corrosive gases, and dust
• Ensure correct wiring for live (L) and neutral (N) lines to guarantee proper leakage protection
• Regular testing using the test button to ensure long-term functionality
• Avoid excessive or incorrect operation outside safe conditions