User Manual Manual

3-21 Functions

Publication 825-UM001B-EN-P January 2001

Table 3.J Thermal Overload Setting Parameters

➊ Up to 2 000 A, if primary current transformers are used.

➋ –5…60 °C (23…140 °F)

➌ UL/CSA 160…434 A

➍ The cooling factor can be modified to reflect different motor cooling with running motor and at standstill.

Detection Module ➋

825-MCM2 825-MCM20 825-MCM180 825-MCM630 825-MCM630N

Rated Current

Setting range 0.5…2.5 A ➊ 2.5…20 A ➊ 20…180 A 160…630 A ➌ 160…630 A

Factory setting 20 A 20 A 20 A 20 A 20 A

Setting increments 0.01…2 A 0.1…2 A 1 A 2 A 2 A

Locked-Rotor Current (Multiple of Rated Current)

Setting range

2.5…12 

Factory setting

6 

Setting increments

0.1 

Locked-Rotor Time (Admissible Locked-Rotor Time of Cold Motor)

Setting range 1…600 s

Factory setting 10 s

Setting increments 1 s

Cooling Factor of Motor Off/On ➍

Setting range 1…10

Factory setting 2.5

Setting increments 0.5

Resetting the Thermal Trip

Setting range 10…100% of thermal utilization

Factory setting 50%

Setting increments 1%

Ultimate Release Current

Incl. setting tolerance

1.05…1.15 