Type name of the operating handle

F-2SV is standard, F-2SVE is for emergency use. The difference is the color of the handle and its surroundings parts. More Details >>

Rated insulation voltage

It is voltage which ensures withstand voltage and it is used as basis to determine insulation distance. 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 >>

Rated current and continuous current

The rated current is standard value for continuous current, short time delay current and instantaneous current. Continuous current is non-breaking current (c... More Details >>

Time Delay type at the maximum operat...

The maximum operating time of Time-delay type Earth Leakage Circuit Breaker can be switched to 0.45s, 1.0s and 2.0s. The operating time is:* when it is 0.45s... More Details >>

PAＬ（Pre-Alarm Module）

Pre-Alarm is a function which outputs an alarm if the load current exceeds setting current value. This is useful for securing continuous power supply and pre... More Details >>

Switch disconnector

Switch disconnector is a switch compatible with IEC 60947-3 standard, and it has no overcurrent tripping element. Please use it as a switch with large switch... More Details >>

Default setting from the factory

The knob of the sensitivity current selector is set to the maximum value when shipping in order to prevent unwanted earth leakage tripping when Earth Leakage... More Details >>

How to use TBM

It is an internal accessory to test the earth leakage tripping operation by applying voltage remotely. It is possible to make the same control sequence as th... 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 >>