Siemens 3RV1042-4HB10 Circuit Breaker, 50A, 3-Pole

Introducing the Siemens 3RV1042-4HB10 Circuit Breaker — a purpose-built 50 A, 3-pole protection device designed for demanding industrial environments. This Siemens part is ideal for service, maintenance, and replacement projects where reliable three-phase circuit protection is essential for keeping production up and running.

With a true three-pole design, this breaker protects all phases in your 3‑phase circuits, delivering balanced fault isolation to help prevent collateral damage to motors, drives, and distribution feeders. The 50 A rating makes it well-suited for mid‑range industrial loads, including motor feeds and line-side protection in manufacturing lines and equipment rooms.

Key benefits

• Three-pole, three-phase protection: Ensures synchronized interrupting of all phases for effective fault isolation in 3‑phase systems.
• 50 A capacity: Supports mid-range industrial circuits where reliable protection is needed without unnecessary tripping.
• OEM-grade reliability: Siemens build quality designed for endpoints in panels, motor control centers, and industrial switchgear.
• Exact part number resonance: Confirm compatibility by matching the exact part number 3RV1042-4HB10 with your application requirements.
• Support for compatibility checks: If you’re unsure about fit, we can help verify compatibility using the part number and your system details.

Compatibility and fit guidance

Use the exact part number 3RV1042-4HB10 to verify fit within your existing panel, MCC, or control gear. Compatibility depends on application requirements, including enclosure type, trip characteristics, and the electrical environment. If you need a quick confirmation, reach out with your system details and we’ll assist with a precise fit check.

Ideal applications

• New installations and panel upgrades requiring robust three-phase protection
• Replacement of aging or failed breakers in industrial control panels
• Protection for motors, conveyors, CNC machines, and other heavy equipment powered by 3-phase systems

Specifications

• Manufacturer: Siemens
• Part Number: 3RV1042-4HB10
• Product Type: Circuit Breaker
• Amperage: 50 A
• Poles: 3
• Notes: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? Message us and we'll help.

Configure this Siemens 3RV1042-4HB10 as a reliable safeguard for your three-phase electrical infrastructure, and experience streamlined maintenance, safer operation, and quicker downtime recovery when issues arise.