RTBSM Bimetal Thermostat

This bimetal thermostat is designed for temperature control in heating or cooling systems, with adjustable temperature settings. It is available in Normally Closed (NC) models for heating applications and Normally Open (NO) models for cooling applications. The NC type opens the contact as the temperature rises (red knob), while the NO type closes the contact as the temperature rises (blue knob). It operates within a voltage range of 100–240V and is UL Listed, CE, and UKCA certified for safety and compliance.

Product Features

Available in multiple setpoint ranges (-20 to 40°C, -10 to 50°C, 0 to 60°C, and 20 to 80°C), this device features a hysteresis of 7K ± 5K, dual-pole terminals (AWG 20–14) with traditional screw or screwless connection options, and a molded housing designed for installation on standard 35mm DIN rails in accordance with EN 60715.

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Specification Sheet

Specifications

RTBSM	Bimetal thermostat
Temperature setting range	-10… 50°C	0… 60°C
Rated input voltage [V]	100–240VAC
Temperature set difference (per stage) [°C]	7K (±5K tolerance)
Contact type (snap-action type)	1 NO (normally open) or 1 NC (normally closed).
Maximum switching capacity (relay output)	NC: 16A 240VAC/ 15A 120VAC NO: 12A 120-240V LRA/ 2A 120-240V FLA
Sensing elements	Bimetallic sheets
Wiring	Screw-free / screw-free, AWG 18-14 (AWG20 max. 13A)
Dimensions (L×W×H)	44 × 25 × 65 mm
Installation:	DIN rail EN 60715 rail clip is built-in
Storage temperature range	-45 to 80°C
Wire type	Copper, solid or stranded
Strip length	8–12mm
Housing material / color	Plastic, grey (RAL 7035)
weight	50g