Square D QO-154L225PG Convertible Main Lug Load Center, NEMA 1

Square D QO-154L225PG Convertible Main Lug Load Center, NEMA 1

The Square D QO-154L225PG Convertible Main Lug Load Center is engineered for residential and light industrial electrical distribution, accepting QO circuit breakers, ground fault interrupters, arc fault interrupters, and surge arresters inside a durable NEMA 1 indoor enclosure. This 1 phase, 3 wire convertible main lugs (PoN) configuration is available across a range of amperage ratings from 125A to 225A to match project load requirements, and every configuration shares a tin-plated copper busbar and a 65 kA short circuit current rating, delivering the performance and durability professionals expect from Square D. UL Listed for code-compliant installation, this load center is a dependable choice for service panel upgrades and new construction alike.

Key Features

• Amperage Range: Available in 125A, 200A, and 225A main lug ratings to fit a variety of service sizes.
• Convertible Main Lugs (PoN): Single-phase main lug only indoor load center that accepts QO breakers, GFCI, AFCI, and surge arrester devices for flexible system protection.
• Durable Construction: Tin-plated copper busbar provides superior conductivity and corrosion resistance for long-term reliability.
• Electrical Connection: Lug-style termination accepts AWG 6...300 kcmil aluminum/copper conductors, with main lugs torqued to 250 lb.in for AWG 4...250 kcmil aluminum/copper wire, and cover fasteners torqued to 20 lb.in.
• Short Circuit Rating: 65 kA short circuit current rating supports demanding fault-protection requirements.
• Phase Configuration: 1 phase, 3 wire system for standard residential and light commercial service.
• NEMA 1 Enclosure: Indoor-rated enclosure with baked enamel gray finish for a clean, protected installation.
• Operating Range: Rated for ambient air temperatures from -5°C to 40°C.

Certifications & Compliance

• UL Listed
• NEMA 1 Indoor Enclosure

Technical Specifications

• Amperage Options: 125A, 200A, 225A
• Warranty Period: 18 months
• Toxic Heavy Metal Free: Yes
• Mercury Free: Yes
• Range Of Product: QO
• ROHS Exemption Information: Yes
• ROHS Eur In Scope: Yes
• Number Of Tandem Circuit Breakers: 10

Typical Applications

• Residential Electrical Service Panels
• Light Industrial Power Distribution
• Main Service Upgrades and Panel Replacements
• New Construction Electrical Installations
• Indoor Load Center Applications Requiring NEMA 1 Protection

Why Square D?

Square D QO Load Centers combine a tin-plated copper busbar, a 65 kA short circuit current rating, and UL Listed construction to deliver superior performance and durability across the full 125A-225A amperage lineup. With convertible main lugs, a NEMA 1 indoor enclosure, and compatibility with QO breakers, GFCI, AFCI, and surge arrester devices, this load center supports reliable, code-compliant electrical distribution for professional installations.