Accessories
4.11 Test devices
3VA molded case circuit breakers with UL and IEC certification
Manual, 01/2019, L1V30435333-01
361
The TD300 activation and trip box
The TD300 activation and trip box is a mobile, battery-operated local test device. Its purpose
is:
● To supply the ETU with power so that the ETU can be parameterized when the molded
case circuit breaker is switched off and de-energized.
● To test and service the electronic trip unit (ETU).
The power supply is provided by two AA batteries included in the scope of supply.
The TD300 activation and trip box has a compact size of 3 x 4.21 x 1" / 76 x 107 x 25 mm
(W x H x D).
Description of the TD300 activation and trip box
LED "ACT" for indicating the battery status
Slide switch ON/OFF
<TRIP> pushbutton for testing the molded case circuit breaker
2 1.5 V AA batteries
Plug-in connector for insertion in the test socket on the ETU
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