Switch introduction

HH15 (QSA) series isolating switch fuse group, HH15A (QA), HH15P (QP) series isolating switch, HH15S (QSS), HH15A; S (QAS), HH15PS (QPS) series double-throw switch (hereinafter referred to as switch) It is mainly used in distribution circuits and motor circuits with high short-circuit current as main or main switches that are operated infrequently manually. The QSA. QSS series switches can be used for short circuit protection.

The switch complies with the GB140483.IEC60947-3 standard and is widely used in higher-level drawer type low-voltage complete sets.

Model meaning

Normal working conditions

1.The ambient air temperature is not higher than +40 ° C, not lower than -5 ° C, and the average temperature within 24 h does not exceed +35 ° C.

2.The altitude of the installation site should not exceed 2000m.

3.When the ambient air temperature is +40 °C, the relative humidity does not exceed 50%, the monthly average maximum relative humidity of the wettest month is 90%, and the monthly average minimum temperature of the month is +25 °C, taking into account the temperature change. Condensation on the surface of the product.

4.The surrounding environmental pollution level is level 3.

5.installation category is class IV.

Switch structure feature

1. The switch adopts the front rotation operation mode, which consists of the operating mechanism, the contact system and the handle.

2. The switch adopts a fully enclosed structure, and the static contact and arc extinguishing system are assembled in a casing made of a new type of arc-resistant engineering plastic, and the speed of the quick-action mechanism switch closing and breaking is independent of the operator's movement speed. Therefore, the safety of operators and equipment is guaranteed.

3. The switch has a unique performance of the contact system, the moving contact system is composed of four compression spring copper rollers, each roller can be rolled separately, so as to prevent the contact welding from occurring more effectively; In the event of a fault, the contact pressure increases with increasing current and can withstand large short-circuit currents.

4. The operating handle can be installed on the switch cabinet door. When the cabinet door is closed, the handle is wedged with the joystick of the switch. When the switch is in the closed position, the handle is interlocked with the cabinet to prevent the door from opening.

The main technical parameters

Dimensions