BSB 90A DC Circuit Breaker | Compatible with EG4 FlexBOSS21 Hybrid Inverter

2026-03-06T15:02:41-07:00

Vendor: EG4
Type: Solar Accessories & Components
Price: 44.00

Safe, Seamless 90A Protection for FlexBOSS21/GridBOSS Systems
The 90A DC Circuit Breaker provides dependable overload and short-circuit protection for DC power circuits in solar and energy storage systems. Designed for seamless compatibility with the EG4 FlexBOSS21 Hybrid Inverter, it helps protect critical components while supporting safe, long-term system operation in residential and commercial applications.

Key Benefits:

90A DC Circuit Protection: Rated for up to 90 amps, providing reliable protection against overloads and short circuits in DC power systems.

FlexBOSS21 Compatibility: Designed to integrate cleanly with the EG4 FlexBOSS21 Hybrid Inverter for streamlined system design and installation.

High Interrupting Capacity: Supports interrupting capacity up to 10,000A to safely handle fault conditions.

Durable, All-Environment Design: Operates across a wide temperature range from -40°C to +85°C for dependable performance in demanding environments.

Enhanced Safety Features: Includes trip-free operation, visual trip indication, and protection against reverse polarity, over-voltage, and surge events.

Standards Compliant: Manufactured to meet GB/T 14048.2, IEC 60947-2, and UL489 safety standards.

Use Cases:

Ideal for DC protection in residential and commercial solar systems, battery-based energy storage setups, industrial automation equipment, telecom systems, and mobile or temporary power installations.

Tech Specs:

Rated Current: 90A

Rated Insulation Voltage: 500V

Rated Impulse Withstand Voltage: 4kV

Interrupting Capacity: Up to 10,000A

Electrical Life: 6,000 cycles

Mechanical Life: 10,000 cycles

Torque Range: 2.8 – 6.8 N·m

Operating Temperature: -40°C to +85°C

Compliance: GB/T 14048.2, IEC 60947-2, UL489