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Hitachi

Site Name

Thermal Overload Relays (THR)

Plentiful Products Anable Easy Selection of Motor Protection

Category (Frame) Standard reley with
overload protection
(IE1)
Reley with overload and
single phasing protection
(IE2)
12B applicable applicable
20B applicable applicable
25B applicable applicable
50B applicable applicable
80B applicable applicable
150B applicable applicable
250B applicable applicable
400B applicable applicable
600B applicable applicable

Number of Heat Elements

- 1E is normally 2 heat element
- 2E is normally 3 heat element

Number of heat elements

Type and Model

TR12B- TR20B- TR25B-
0.2 - 11A 0.2 - 15A 20 - 22A
TR50B- TR80B- TR150B-
9 - 55A 20 - 67A 80 - 130A
TR250B- TR400B- TR600B-
140 - 240A 140 - 380A 140 - 500A

Note: - is 1E or 2E