Isolating switch iSW-40-4 40A 4-pole A9S65440

Product features

Safe disconnection of circuits with the iSW-40-4 isolating switch

The iSW-40-4 isolating switch from Schneider Electric (catalog number A9S65440) is a reliable device designed for safe isolation of electrical circuits, both in domestic and industrial installations. The four-pole (4P) design allows for complete disconnection of the phase and neutral, providing comprehensive protection during maintenance or service work. The rated current of 40A makes it suitable for protecting circuits with medium loads.

Functionality and safety in one device

This switch is distinguished primarily by its forced separation function in accordance with DIN VDE 0113 – this guarantees a certain disconnection of the circuit and prevents accidental reconnection. The Visi-Safe indicator is an additional safety feature that visually confirms the opening of the contacts, giving confidence that the current has been cut off. The width of the device is 4 modules (72 mm), which facilitates mounting in standard distribution boards.

• Forced separation: Ensures complete isolation of the circuit, minimizing the risk of electric shock.
• Visi-Safe indicator: Allows unambiguous verification of the disconnection status – crucial for safety during installation work.
• Compact dimensions: Occupies only 4 modules in the distribution board, saving valuable space.
• Rated switching capacity 5kA: Provides effective protection against the effects of short circuits.
• Short-circuit withstand (Icw) 1.26kA: Resistance to short-circuit currents, which translates to reliable operation.
• Expandability: Compatible with additional accessories, such as door drives or auxiliary contacts (available separately), which increases its functionality.

Technical specifications for professionals

The iSW-40-4 switch is characterized by a rated voltage of 240V (minimum 415V) and a degree of protection IP20, which means protection against touching with fingers and solid objects larger than 12.5 mm. The installation depth is 75.5 mm. The device is designed to operate with AC voltage and has 4 switching contacts – providing a reliable connection under normal operating conditions. The lack of a signaling lamp simplifies the design and increases the reliability of the device.