P UL489 - 20A, 2-Pole, Miniature Circuit Breaker (MCB)

Protective reliability meets compact design with the P UL489 20A, 2-Pole Miniature Circuit Breaker (MCB). Engineered for dependable overcurrent protection, this 2-pole device cleanly interrupts both conductors in a circuit, making it an essential component for safe, code-compliant power distribution in demanding environments.

Designed for flexible integration, this MCB is ideal for panelboards, switchboards, and control panels where space is at a premium but protection cannot be compromised. Whether you’re building a new distribution panel, upgrading an existing MCC, or stocking OEM equipment, this 20A, 2-Pole solution delivers reliable performance when it matters most.

• Current rating: 20A
• Poles: 2-Pole
• Type: Miniature Circuit Breaker (MCB)
• Compliance: UL 489-listed (P UL489) to meet standard overcurrent protection requirements
• Applications: Panelboards, switchboards, control panels, motor control centers
• Ideal for: Industrial, commercial, and OEM installations needing reliable, fast-acting protection

What problems does this MCB solve?

In any distribution setup, overcurrent events threaten wiring insulation, motors, sensors, and control logic. This 20A, 2-Pole MCB provides immediate, coordinated interruption on fault conditions, safeguarding both conductors and connected equipment while helping you meet safety codes and installation standards.

Use cases that fit real-world needs

• Protection for lighting and receptacle circuits within commercial panelboards where space is limited
• Internal protection for motor control centers in manufacturing or assembly lines
• OEM equipment enclosures where compact protection is required without sacrificing reliability

Why choose this 2-Pole MCB over alternatives?

Two-pole protection ensures both live conductors are disconnected together, reducing shock risk and providing synchronized shut-off during faults. The compact, miniature form factor fits tight panel spaces and OEM assemblies, while UL 489 listing guarantees alignment with recognized safety standards. This combination delivers a robust, straightforward solution for essential circuit protection without unnecessary bulk.

Practical tips for installation and use

• Verify panelboard compatibility and ensure the device’s current rating matches the circuit load to prevent nuisance trips
• Follow best practice for conductor sizing and tighten terminals to the manufacturer’s torque specification
• Use in circuits where both hot conductors require simultaneous disconnection for enhanced safety
• Keep spare units on hand for OEM models and service panels to minimize downtime