Key Specifications

Parameter	Specification
Switching difference	12.6 °F ±7 °F 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	50 × 67 × 46 mm
Operating/Storage temperature	-49 to +176 °F (-45 to +80 °C)
Operating/Storage humidity	max. 90 %RH (non-condensing)
Protection type	IP20

The KTO021 Bimetal Mechanical Thermostat is designed for electrical cabinet thermal management. Adopting bimetallic sensing element and snap‑action contact, it delivers reliable and precise temperature control inside enclosures.

With compact structure and 35 mm DIN‑rail mounting design, this mechanical thermostat features a wide adjustable temperature range (0~60℃, customizable). The red/blue color‑coded rotary knob enables easy temperature setting, and a working indicator light shows operating status clearly.