CT7K & CT4 Thermal Overload Relays

Simple and effective motor protection for applications to 10HP @ 460V (15HP @ 575V)

Sprecher + Schuh's economical CT7K and CT4 Thermal Overload Relays share the same excellent protection characteristics as our full featured thermal overload relays, with the exception of differential tripping and selectable reset, yet still trip under single phase conditions at 1.25 x set current.

CT7K Thermal Overload Relays, Manual Reset

Directly Mounts to Contactor Adjustment Range (A) Catalog Number CA7-9…23 0.10…0.15 CT7K-17-0.15 0.15…0.23 CT7K-17-0.23 0.23…0.35 CT7K-17-0.35 0.35… 0.55 CT7K-17-0.55 0.55…0.8 CT7K-17-0.80 0.8…1.2 CT7K-17-1.2 1.2…1.8 CT7K-17-1.8 1.8…2.7 CT7K-17-2.7 2.7…4 CT7K-17-4.0 4…6 CT7K-17-6.0 6…9 CT7K-17-9.0 CA7-12…23 9…12.5 CT7K-17-12.5 CA7-16…23 12.5…17.5 CT7K-17-17.5

CT4 Thermal Overload Relays, Manual Reset

Directly Mounts to Contactor Adjustment Range (A) Catalog Number CA4-9 0.10…0.15 CT4-0.15 0.15…0.23 CT4-0.23 0.23…0.35 CT4-0.35 0.35… 0.55 CT4-0.55 0.55…0.8 CT4-0.80 0.8…1.2 CT4-1.2 1.2…1.8 CT4-1.8 1.8…2.7 CT4-2.7 2.7…4 CT4-4.0 4…6 CT4-6.0 6…7.7 CT4-7.7 7.5...9 CT4-9.0 CA4-12 8.8...10.5 CT4-10.5 10.4...12 CT4-12.0