TSM8 dual rotary contact structure and the energy release system ensures stable and reliable protection, and has excellent current-limiting characteristics. Transparent aluminum cover protects your trip unit from settings, rotary handle, motor operation mechanism, etc, can be installed.
1.The altitude belows 2000m;
2.Circuit breaker can be used between -25ºC and +70ºC. For temperatures higher than 40ºC (65 C for circuit breakers used to protect motor feeders). devices must be derated;
3.It can withstand the impact from humid air, salt spray, oil mist and mold;
4.It should be installed in places with no danger of explosion, no conductive dust, and no substance enough to corrode metal or damage the insulation;
5.In places with no rain and snow erosion;
7.Installation category Ill.
Rated insulation voltage(V)
Rated impulse withstand voltage(kV)
Rated operational voltage(V)
with toggle / with direct or extended rotary handle
frontconnections / rear connections
Thermo-magnetic trip unit for TSM8-100~250
MIC 2.3 electronic trip unit for TSM8-400~630
Settings are made using the adjustment dials with fine adjustment possibilities.
Overload protection: long time protection(Ir)
Inverse time protection against overloads with an adjustable current pick-up lrsetusing a dial and a non-adjustable time delay tr.
Short-circuit protection: Short-time protection with fixed time delay(Isd)
Protection with an adjustable pick-up lsd.
Tripping takes place after a very short delay used to allow discrimination with the downstream device.
Short circuit instantaneous protection:(li)
lnstantaneous short-circuit protection with a fixed pick-up
MIC 5.0 electronic trip unit for TSM8-800~1600
Protection thresholds and delays are set using the adjustment dials.
Offer standard long time delay setting module.
True rms long-time protection.
Thermal memory: thermal image before and after tripping.
Short-time(rms) and instantaneous protection.
Selection of lt type(ON or OFF) for short-time delay.
On 3-pole circuit breakers, neutral protection is not possible.
On 4-pole circuit breakers, neutral protection may be set using a three-position switch: neutral unprotected (4P 3d), neutral protection at 0.5lr (4P 3d +N/2) or neutral protection at lr (4P 4d).
Overload indication by alarm LED on the front; the LED goes on when the current exceeds the long-time trip threshold.
A mini test kit or a portable test kit may be connected to the test connector on the front to check circuit-breaker operation after installing the trip unit or accessories.