ABB SU201M-K3 - 3A, 1-Pole, Miniature Circuit Breaker (MCB)

Introducing the ABB SU201M-K3 — a compact 3A, 1-Pole Miniature Circuit Breaker (MCB) designed to protect sensitive circuits within panelboards, switchboards, and control panels. Built by ABB, this device delivers dependable overcurrent protection in a streamlined form factor that keeps your electrical distribution neat and reliable.

Key advantages include:

• Current rating: 3 A — ideal for protecting small control circuits, sensor lines, pilot runs, and low-power devices where precise protection matters.
• Poles: 1-Pole — simplifies integration into single-circuit branches within multi-circuit panels.
• Breaker type: Miniature Circuit Breaker (MCB) — fast, predictable tripping to minimize damage from overcurrents.
• Placement: Suitable for installation in panelboards, switchboards, and control panels across industrial, commercial, and OEM environments.

Who benefits most?

• Maintenance teams and technicians needing reliable protection for small-draw circuits in machinery, automation racks, or distributed control cabinets.
• OEMs designing compact control panels where space is at a premium but protection cannot be compromised.
• Facilities engineers overseeing lighting or low-power circuits that require consistent, predictable protection.

What makes this ABB MCB stand out?

• Brand reliability: ABB’s legacy in electrical protection translates to dependable performance and consistent trip characteristics.
• Space-efficient design: A 1-pole format helps maximize panel density without sacrificing protection quality.
• Straightforward integration: Engineered for common panelboard layouts and control panel architectures, making replacement and servicing routine.

Practical use cases and scenarios

• Control circuits for small automation devices (sensors, relays, and actuators) where circuits are limited to a few amperes.
• Lighting control panels in workshops or booths that require quick, predictable disconnection in fault or overload conditions.
• Low-current sub-feeders in compact switchgear where modular protection keeps maintenance simple.

Tips for installation and safety

• Ensure the line and load connections are tightened to the manufacturer’s torque specifications and re-tighten after initial operation.
• Verify compatibility with your panelboard or control cabinet and follow local electrical codes for installation and labeling.
• Keep a record of the device, including current rating and pole configuration, to simplify future replacement or expansion plans.

For reliable, precise overcurrent protection in compact electrical architectures, the ABB SU201M-K3 delivers results you can trust. Add this 3A, 1-Pole MCB to your distribution panels today and keep critical circuits safeguarded with a proven industry standard.