Key Specifications

Technical Data	Specification
Switching difference	12.6 ℉ ±7 ℉ tolerance (7 K ±4 K)
Sensor element	thermostatic bimetal
Contact type	snap‑action contact
Service life	＞100,000 cycles
Max. switching capacity	NC:10 A resistive / 2 A inductive @ AC 250 V NO:5 A resistive / 2 A inductive @ AC 250 V 15 A resistive / 2 A inductive @ AC 120 V DC 30 W (DC 24‑72 V)
Max. inrush current	AC 16 A for 10 sec.
Housing	PC
Weight	80 g
Mounting	clip for 35 mm DIN rail
Dimensions	67×50×46mm
Operating/Storage temperature	-49 to +176 ℉ (-45 to +80 ℃)
Operating/Storage humidity	max. 90 %RH (non‑condensing)
Protection type	IP20

KTS021 is a normally‑open bimetal mechanical thermostat designed for cooling control. Featuring snap‑action contact and reliable mechanical structure, it delivers precise cabinet temperature regulation. It can work stably in harsh environments from -45℃ to +80℃, widely used to activate cooling fans or alarm signal devices inside electrical enclosures.

Compact DIN‑rail mounting design simplifies installation. The adjustable temperature dial allows flexible temperature setting, with an indicator light for working status. IP20 protection, long service life and high switching capacity make it an ideal temperature control component for control cabinets, switchgear and industrial enclosures.