M4 Series Molded Case Switch

Heavy-Duty Switching Without Overcurrent Protection

The M4 Series Molded Case Switch (M4D) is the perfect solution for isolating loads where breaker protection is not required. Used as a reliable disconnect, the M4D offers rugged switching capabilities in high-current systems — ideal for industrial and commercial service panels.

Applications:

Main disconnect switches

Generator and ATS bypass

Emergency shutdowns

Maintenance isolation in commercial systems

Key Features:

Current rating: 400A, 500A, 600A

Poles: 2, 3, 4

No overcurrent trip unit

UL 489 and IEC 60947-3 compliant

Identical dimensions to M4 MCCBs

Compatible with rotary handles and lockout devices