Interroll Drum motor series i, S, S/A, D
General technical information
14
Version 4.1 (06/2015) en-US
Translation of original instruction manual
Thermal protection
Under normal operating conditions, the thermal circuit breaker integrated in the stator winding is
closed. When the motor limit temperature is reached (overheating), the switch opens at a preset
temperature to prevent damage to the motor.
WARNING
The thermal circuit breaker is automatically reset after the motor has cooled off.
Inadvertent start-up of the motor
4
Connect the thermal circuit breaker in series with a suitable relay or contactor so that the
current supply to the motor is safely interrupted when the switch trips.
4
Ensure that the motor can be switched on again after overheating only with a confirmation
button.
4
After the switch has tripped, wait until the motor is cooled off, and ensure prior to switch-on
that no dangers to other persons are present.
Service life: 10,000 cycles
AC cos φ = 1
2.5 A 250 V AC
cos φ = 0.6
1.6 A 250 V AC
DC
1.6 A 24 V DC
1.25 A 48 V DC
Service life: 2000 cycles
AC cos φ = 1
6.3 A 250 V AC
Switch-back temperature 40 K ± 15 K
Resistance < 50 mΩ
Contact bounce time < 1 ms
Standard design:
Temperature limiter,
automatically switching
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