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: 2650108
Catalog No: MP20H1

2000A, 600V, MP20H1, STR58U, LSI, 2000ARP 54758, Electrically Operated, Draw-Out, F O SDE MCH MX XF OF

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Manufacturer Merlin Gerin / Square D
Catalog Number MP20H1
Frame Size 2000A
Frame Type MP
Operating Mechanism Electric
Mounting Configuration Draw-Out
Voltage Class 600V
Charge Voltage 120VAC
Close Oil Voltage 120VAC
Shunt Trip Voltage 24VDC
Accessories AUX
Connection Diagrams -
Trip/ Sensor Size 2000A
Trip Unit Manufacturer Merlin Gerin
Trip Unit Catalog Number STR58U
Protective Functions LSI
Rating Plug Catalog Number -
Inventory Number 2650108
Location N322L

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