Spare parts/accessories
15.4 Electrical/electronic engineering
3VL molded-case circuit breakers
338 System Manual, 03/2009, 110 0110 - 02 DS 01
Battery supply device
The handheld tester for electronic trip units is used as a local test device for the SENTRON
VL circuit breakers with electronic trip unit, and it can be used as an external voltage supply
for the electronic trip units (ETU and LCD-ETU). The portable battery power supply is fed by
two commercially available 9-V block batteries.
Test function:
● Test release
Figure 15-8 Battery supply device
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