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U.S. Tsubaki SHOCK RELAY monitors the change in motor current that closely approximates the torque output of the motor. Should the motor current exceed the preset LOAD CURRENT point for a preset length of SHOCK TIME (continuous overload time), the SHOCK RELAY will shut down the motor power supply.
The TSB151 and TSB152 series SHOCK RELAY allows easy connection into new or existing applications. For single or three phase motors, simply wire the current transformer that we supply into one line
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Unit of Measure

Specifications

Motor

17 to 400 amps

Load Current Range

30 to 130 %

Start Time Setting Range

0.2 to 20 arc·sec

Shock Time Setting Range

0.2 to 3 arc·sec

Input Voltage for Operation

115/230 Volt 50/60 Hz

Allow. Input Voltage Fluctuation

10 %

Meter Fine Tuning Adjustment

Yes
Output Contact1 Transfer Contact 250VAC 0.2A at inductive load

Test Button

Yes

Withstanding Voltage

1500 VAC at 60 Hz for 1 min. between terminal and enclosure

Surface Color

Munsell 2.5Y/2

Weight

2.600 lb

Power Consumption

1.2 VA

Operating Temperature Range

14 to 122 ºF

Operating Humidity

85% R.H. or less

Max. Elevation

1000 m

Atmosphere

Free of corrosive gas and dust
  • 1 If the starter coil in the magnetic contactor (MC) of the monitored motor exceeds the Shock Relay output contact’s capacity, an auxiliary relay must be installed to prevent damage to the Shock Relay. The instruction manual included with each Shock Relay d