Circuit breaker for transformer protection 1A PKZM0-1-T 088911

Transformer protection switch – reliability and installation safety

This three-pole transformer protective switch, designated PKZM0-1-T 1A, is a key element in protecting electrical installations powering transformers. Designed in accordance with IEC/EN 60947, it provides effective protection against overload and short circuit, minimizing the risk of failures and downtime. Its design and parameters make it a suitable solution for both professional installers and end-users looking for reliable protection.

Construction and functionality

The switch is characterized by a solid fixed mounting construction, and its continuous rated current is 1A. The adjustable overload (0.63 - 1 A) and short-circuit (20 A) release allows for precise adjustment to the specifics of the protected installation. The built-in phase failure sensitivity mechanism further increases the level of safety. Screw terminals ensure secure and durable connection of wires. The rated short-circuit switching capacity of 150 kA at 400 V, 50 Hz guarantees a quick response in the event of serious disturbances in the network. Additionally, the presence of a trip indicator facilitates identification of the cause of the switch operation – whether it was an overload or a short circuit.

Application and benefits

The PKZM0-1-T switch finds wide application in protecting single-phase and three-phase transformers with a voltage of up to 690 V AC. It is ideal for control circuits, switchboards and low-voltage installations of the SELV/PELV/FELV type. Its compact size (PKZM 0) allows for easy mounting even in limited space. The degree of protection IP20 provides protection against contact in accordance with VDE 0106 part 100. Thanks to the possibility of mounting both on TH rail and DIN TH rail, the switch is extremely versatile and easy to integrate with various electrical systems. It is worth emphasizing that the device is supplied with complete protection, eliminating the need for additional purchases.