Ampteks Products



Ampteks, Inc. is regarded as industry experts on circuit breakers. Being located in the Bay Area allows us the opportunity to be involved in the most sophsticated data centers. Typically on the low voltage distribution are line ups of Square D Merlin Gerin MasterPact MP or NW frames. We have installed and tested more than 1000 AC-PRO-MP trip unit retrofit kits as well as testing countless MasterPact NW frames.


We repair these frames as well as install accessories such as charging motors, shunt trips, UVR's, and auxiliary switches. We stock these frames as well as parts and accessories. Please search below for particular frame you require, or contact us for a breaker designed for your application.

Insulated Case Circuit Breaker

Inventory No: 2650098
Catalog No: MP12H1

1200A, 600V, MP12H1, STR28D, LI, 54750 1200RP, Electrically Operated, Bolt-In, F O SDE MCH MX XF PF OF

Request a quote


Manufacturer Merlin Gerin / Square D
Catalog Number MP12H1
Frame Size 1200A
Frame Type MP
Operating Mechanism Electric
Mounting Configuration Bolt-In
Voltage Class 600V
Charge Voltage 120VAC
Close Oil Voltage 120VAC
Shunt Trip Voltage 120VAC
Accessories AUX, PF
Connection Diagrams -
Trip/ Sensor Size 1200A
Trip Unit Manufacturer Merlin Gerin
Trip Unit Catalog Number STR28D
Protective Functions LI
Rating Plug Catalog Number -
Inventory Number 2650098
Location N324L

Request Quote for Insulated Case Circuit Breaker

Contact Information

Need a Report? No Problem

Submit your request Image


Get your report emailed Image