Main parameters of products

Rated current：4A/250VAC

Inductive current：1A/250CAC

Thermal current：5A/250VAC

Maximum operating force：0.25

Minimum release force：0.05

Contact point：14.7±0.4mm

Differential travel：0.35mm

Contact clearance：0.4mm

Total height：89mm

Length of handspike：71mm

Travel distance：14mm

Straight line distance between installation holes：48mm

Characteristics of product:

This product is mainly used to protect the liquid level. It can switch off the power when the water level in the vessel is higher than the standard water level to reach the protection purpose.

       Strength of appliance

        Apply 1500VAC voltage between the live part and shell with leaking current of 5mA for 1 minute, it has no breakdown.

Insulation resistance:

Insulation resistance between the live part and uncharged part ≥ 100MΩ

Work principle

     There is a switch and terminal 1, 2, 3 above the single controller. Of it, terminal 1 and 3 are often closed and terminal 1 and 2 are often opened. When the water level in the vessel rises, the floater will float upward, so terminal 1 and 3 are opened and terminal 1and 2 are closed. When the water level drops under the standard water level, terminal 1and 3 are closed and terminal 1 and 2 are opened and the electrical appliance can work normally.