Cam switch disconnector 40A, 0-1 (3-pole), in OB14 enclosure with yellow/red lockable front SK40-2.8211\OB14ZC

Cam switch – reliable circuit switching

This three-pole cam switch with a current of 40A is a solid solution for manual switching of electrical circuits. It finds application in industrial and construction installations where reliability and durability are required. The OB14 housing provides protection against external factors, and the yellow-red front panel facilitates identification.

Design and application

A cam switch, also known as a rotary switch, is a device used to manually switch circuits. Unlike automatic circuit breakers, it does not react to overloads or short circuits – its task is to change the state of the circuit at the operator's command. This model, with the ability to be set to the "0" position, allows for safe disconnection of the load. It is particularly useful where visual certainty of the circuit state is needed, for example, when servicing machines or equipment.

Advantages and product features

• Durable construction: Made of high-quality plastic, resistant to mechanical damage and weather conditions (IP65 protection class on the front).
• Safety of use: Has a "0" position, allowing for complete disconnection of the circuit and providing additional safety during maintenance or repair.
• Versatility: Designed for mounting in electrical installation enclosures, ideal as a switch, isolator or control switch.
• High reliability: Provides a stable and reliable electrical connection for a long service life.
• Easy installation: Complete device in a housing facilitates installation and minimizes the time required for commissioning.
• Adapted to work in difficult conditions: Possibility of operation in temperatures from -40°C to +70°C (operation) and -40°C to +70°C (storage).
• Continuous rated current 40A: Allows for safe switching on of devices with high power consumption.
• Rated operating power for AC-3, 400 V: 12 kW: Enables use in various industrial applications.

Technical parameters and practical applications

The switch is characterized by a continuous rated current of 40A and a rated power of 12 kW at 400V (AC-3). This means that it can be safely used to switch on electric motors with a power of up to approximately 12 kW (at 400V). The lack of auxiliary contacts makes it a simple and economical solution for basic switching applications. Screw connection type ensures a secure and durable connection of wires. The IP65 degree of protection guarantees protection against dust and water jet, which increases its reliability in difficult environmental conditions. The device is not intended for indirect mounting or in distribution boards – its design assumes direct mounting or in dedicated enclosures.