Westinghouse LJ-1220 - 20A, 277VAC, Circuit Breaker

The Westinghouse LJ-1220 is a purpose-built 20A, 277VAC circuit breaker designed to safeguard electrical systems in demanding environments. With a reliable 20-amp current rating and a high 277V maximum, it delivers fast, predictable protection for distribution circuits, helping prevent insulation damage, equipment wear, and unexpected outages.

Where it shines

• Panelboards, switchboards, and control panels: A robust choice for centralized power distribution in commercial and industrial facilities.
• OEM equipment: Integrate into manufactured gear and machinery where dependable overcurrent protection is essential.
• Motor control centers and distribution centers: Ideal for protecting circuits that drive motors and critical control systems in busy environments.

Why this model stands out

• Specific rating for 277VAC systems: Designed to handle typical commercial/industrial distribution voltages, reducing nuisance trips and enhancing system reliability.
• Trusted Westinghouse reliability: Built for long-term performance in environments where safety and uptime matter.
• Compact, compatible design: Suited for standard panel enclosures and OEM layouts without requiring special mounting adapters.

Key specifications at a glance

• Current rating: 20A
• Voltage rating: 277VAC
• Breaker type: Circuit Breaker (Westinghouse LJ-1220)

Who should consider the Westinghouse LJ-1220

• Electrical engineers and panel builders designing or refurbishing distribution panels and motor control centers.
• Facilities managers overseeing commercial or light-industrial electrical systems requiring solid overcurrent protection.
• OEM integrators seeking a dependable, standard-spec circuit breaker for equipment housing and control architectures.

Practical usage tips

• Match the LJ-1220 to 277VAC circuits in your panel or OEM assembly to ensure compatible bus and mounting arrangements.
• Plan for future maintenance by stocking a few spare LJ-1220 units to minimize downtime in critical panels.
• Install in accordance with applicable electrical codes and your panel manufacturer’s guidelines to maintain safe operation and reliable protection.

In short, the Westinghouse LJ-1220 brings targeted 277VAC protection to commercial, industrial, and OEM applications, delivering precise 20A protection where it matters most—keeping power on track and equipment safeguarded in distribution panels and motor control centers.