Square D
Masterpact NW - 1200A Frame
2500A SQD MASTERPACT NW25 H1 MO/DO WC4GGR44R9SXFXXXXXT 120VAC SHUNT TRIP, MICROLOGIC 6.0A LSIG, 2500A AMPACITY
SKU: 020-931
Buy as-is, or with a Full Rebuild + Certified Test Report
Complete reconditioning with comprehensive electrical testing and full documentation. Ships ready to install with confidence.
What's Included in Full Rebuild▼
In-House NETA Certified Testing
3 NETA Certified Technicians on staff — testing done right, in our facility
Reconditioning
All components inspected and cleaned
Main and arcing contacts checked/replaced
Cleaned, repaired, or replaced as needed
Springs, latches, and linkages serviced
All pivot points and moving parts
Verified or replaced to meet specs
Certified Testing
High-current testing to verify trip characteristics
Trip unit verification (L, S, I, G functions)
Micro-ohm testing for contact engagement
High-voltage insulation verification
Close, trip-free, and anti-pump testing
Test points plotted against manufacturer curves
Full test report included with every rebuild. All testing to NETA/ANSI standards.
Custom Configuration Options▼
Tell us your specs and we'll configure the breaker to match:
LSI, LSIG, LI — matched to your needs
Sensor and plug sized to your application
Manual, motor-operated, or electrically-operated
Drawout, fixed, or bolt-in configuration
Alarm switches, aux contacts, bell alarms
24V, 48V, 120V, 240V DC/AC options
Or buy as-is for spare parts or if you have your own testing equipment.
Talk to a Real Expert
Our team has 30+ years of experience with insulated case breakers. We'll help you find exactly what you need — no sales pitch, just real answers.
Ready to get a quote?
Business hours: 7AM–4PM ET • After-hours available
Specifications
Current Configuration
Need different specs? We can reconfigure to your requirements.
We have 142 Masterpact NW breakers in stock. Need different specs? Tell us what you need and we'll find the right match.
View all Masterpact NW →Same Day Ship
For emergencies
Test Report
Included
1 Year Warranty
All breakers
7AM–4PM ET
After-hours avail.
Your Masterpact NW Experts
We specialize in Square D Masterpact NW breakers. Whether you need a replacement, spare parts, repairs, or upgrades - we have you covered.
Large Inventory
Multiple Masterpact NW units ready to ship
Full Testing
Complete test report included
Custom Config
Trip units, mechanisms, auxiliaries
1 Year Warranty
All breakers fully warranted
Ready for a Quote?
Tell us your specs and we'll get you a fast quote. We answer immediately - no waiting, no phone trees.