Main switch rotary 3P 40A

The Ensto KS3.40 is a 3-pole load break switch, or rotary switch, with a rated current of 40 A. It is suitable for manually switching electrical circuits on and off and for isolating circuits for maintenance or control purposes.

The device is designed for mounting on a DIN rail or a panel. It is not a miniature circuit breaker or a residual current device — it does not protect the circuit against overload, short circuits, or residual current, but functions as a switching and isolating switch.

Technical specifications

Manufacturer: Ensto
Series/model: KS / Ensto Compact Switches
Product code: KS3.40
EAN: 6418677170010
Product type: load break switch / rotary switch / disconnector
Number of poles: 3P
Rated current: 40 A
Rated voltage: 400–690 V AC
Maximum operating voltage: 690 V AC
Usage: main switch or maintenance/service switch
Mounting: DIN rail or panel
Connection: screw terminals
Front protection rating: IP20
Dimensions: approx. 86 × 80 × 42 mm
Weight: approx. 0.129 kg
Application: manual switching and isolation of electrical circuits
Protection function: none, does not replace a miniature circuit breaker or residual current device
Package quantity: 1 pc

Suitable for, for example

Main switch for an electrical distribution board
Manual switching of a 3-phase circuit on and off
Disconnector for equipment or distribution circuits
Circuit isolation for maintenance and service purposes
Technical cabinets with DIN rail or panel mounting

We also recommend taking a look at: electrical distribution boards, DIN rail accessories, connecting terminals, miniature circuit breakers, and residual current devices.

Not sure if this load break switch is suitable for your distribution board or solution? Write or call us — we will help you choose the right solution.