Schmersal TQ 441-01 01Y-UE-M20 Industrial Safety Switch

Schmersal TQ-441-01/01Y-UE-M20 is a metal-enclosed pull-wire safety switch designed for one-sided operation with a maximum wire length of 25 meters. It provides two normally closed contacts with overlapping contacts (UE) in a 1 NC + 1 NC configuration and is rated for 380 VAC operation at up to 4 A (thermal current 10 A) with a maximum switching frequency of 3,600 cycles per hour. The unit features a light-alloy die-cast housing with a steel cover, IP65 protection, and an ambient temperature range from -30 to +90 °C; it accepts 2 x M20 x 1.5 cable entries and conductor cross-sections up to 4 mm², with a 22 mm mounting hole diameter. Electrical data includes Ui 400 V and Uimp 4 kV, and the device weighs 670 g (item number 101160101).