STR MasterPact Programmers

Merlin Gerin, Square D and Schneider MasterPact Protection
Electrical.com is a leading supplier of Merlin Gerin Compact & MasterPact circuit breakers and circuit breaker parts. We offer the Merlin Gerin and Square D Insulated Case M and MP MasterPact circuit breakers from 800A-6300A. And we offer the Merlin Gerin Molded Case Compact Series frames up to 2500A, including obsolete and late models of NS, NSF, NSJ, CK, CM and much more. Typically when a MasterPact circuit breaker fails, it is the trip unit or programmer that has gone defective. We offer several solid state models including STR18M, STR28D, STR23SP, STR38S and STR58U with a variety of trip unit functions available. The product selection menu below is designed to assist you in finding the exact programmer or trip unit that you require.

• Solid State Protection
• Ground Fault Protection
• Communication Features