ACB　reverse connection

For ACB, Line and Load are not defined on the main circuit terminals. Reverse connection is available without any limitation. More Details >>

AX

AX (Auxiliary switch) is a switch which electrically displays the ON / OFF state. The markings are 14/AXa, 12/AXb and 11/AXc.* If the circuit breaker itself ... More Details >>

Where UVT power supplied from?

Do not take the control power supply of UVT ("Resettable type" and "Reset prevention type") from the secondary side of the breakers. If taking the control po... More Details >>

Select rated current sensitivity

Please select rated current sensitivity ,according to the protection purpose and the protective grounding resistance value of the load equipment. If you alre... More Details >>

Operation handle CE marking

The operating handle is an external accessory for a circuit breaker and there is no safety standard for the operating handle itself. Therefore, there is no C... More Details >>

ACB How to check the operating chara...

Y-2005 type field test equipment (it is sold separately) enable to check the operating characteristic easily. The test is conducted by connecting the test te... More Details >>

ELCB reverse connection

Almost ELCBs can be connected n reverse. Check the item column of specification table "reverse connection (below 230 V AC)" in the catalog. If it says "Possi... More Details >>

Electronic MCCB 400-1600A How to ch...

First, turn OFF the upstream circuit breaker and the relevant circuit breaker. You must not work in the state where voltage is applied to the relevant circui... More Details >>

Rated current sensitivity

Earth Leakage Circuit Breaker and Earth Leakage Relay operate at higher than 50% but not exceeding 100% of the rated residual operating current IΔn. The eart... More Details >>

ACB opening time

For Shunt Trip (SHT), it is the time from voltage application to open ACB main contact * AE3200-SW or less, AE4000-SWA: 0.04 sec or less* AE4000-SW to AE6300... More Details >>