Siemens SENTRON 3VA1 - Operation and Execution of the TD300 Tripping Function

Accessories
4.11 Test devices
3VA molded case circuit breakers with IEC certificate
510 Manual, 03/2019, A5E03603177010-03
Description of the TD300 activation and trip box
①
LED "ACT" for indicating the battery status
②
Slide switch ON/OFF
③
<TRIP> pushbutton for testing the molded case circuit breaker
④
2 1.5 V AA batteries
⑤
Plug-in connector for insertion in the test socket on the ETU
4.11.1.1
Operation and execution of the TD300 tripping function
CAUTION
Personal injury, spurious tripping and irreparable damage to the TD300 activation and trip
box
Use of the TD300 when the molded case circuit breaker is not de-energized can result in
personal injury, spurious tripping of the circuit breaker and irreparable damage to the
TD300.
Disconnect the molded case circuit breaker from the power supply before using the TD300
activation and trip box.