Send an inquiry

SPDT Bimetal rod thermostats

Water and liquid temperature control, circulation heaters, hydraulic circuits oil temperature etc…

Temperature adjustment range (°C)	0/50, 0/100, 0/150, 10/60, 30/90, 40/140
Rod length (mm)	170, 230, 380, 450
Differential (°C)	1.5±1, 2±1, 3±1.5, 4±2, 6±3, 8±4
Max temperature on rod (°C)	70, 80, 110, 130, 170, 180
Max operating temperature (°C)	85
Electrical rating	16A

TECHNICAL FEATURES

Applications: water and liquid temperature control, circulation heaters, hydraulic circuits oil temperature etc…

Temperature ranges: 0-50°C (32-122°F), 10-60 °C (50-140°F), 30-90°C (86-194°F), 0-100°C (32-212°F), 40-140°C (104-284°F),

0-150°C (32-302°F)

Housing dimensions: 65 x48 x 48 mm (knob not included)

Material: PA66 housing, and Aisi 304 stainless steel rod

Temperature sensing element: Invar/stainless steel bimetal rod, temperature sensing on full rod length

Electrical connections: screw terminals

Mounting:

For liquid temperature sensing: inside pocket with internal diameter > 10 mm , or directly on 3/8”BSPP thread under the head, or with 3/8 x1/2” fitting (see accessories)
For air temperature sensing measurement: with stainless steel bracket

Rating: 16(4)A 250/400VAC, 300.000 cycles. Reduced differential model is not recommended for 400V applications.

Contacts: SPDT, snap action

Max ambient temperature on the head: 85°C (185°F)

Options:

3 fixed setting staggered contacts for hydraulic power units : ask for specific data sheet (Type S3F)
Cnomo electrical connector
Thermovelocimetric version (detects only fast temperature change, used in fire detection and dry run protection). Type: VV, specific data sheet on request)
Other temperature
IP65 aluminum housing: See catalogue N°2

Accessories: BSPT1/2 stainless steel pocket, fittings, brackets , see description and references at the end of this catalogue

Approvals: comply with EN 60730-1 and EN 60730-2 standards

Description of temperature controls
Used as control thermostats or as a safety thermostat with manual reset, these thermostats have a disc made of two different metals laminated together for temperature sensing element. These two metals have different expansion coefficients.
Thermostats installation
The proper functioning of a thermostat depends primarily on the correct choice of the component, but also the conditions of its installation. Conditions used to calibrate regulating and control equipment in the factory are always ideal laboratory conditions, ensuring measurement accuracy and repeatability. These conditions are rarely those found in practice when installing thermostats. However, with a minimum of constraints, it is possible to optimize assemblies.
Electrical contacts
As numerous mechanisms exist, we decided not to distinguish on the basis of constructive technique, but according to their operation speed, which is the key element.
Electrical protection classes
The housings are designed to protect electrical equipment located inside. This protection must be considered in the electrical and environmental angles.)

Temperature range °C (°F)	Rod length (mm)	Reference with standard differential*	Differential value °C (°F)	Reference with reduced differential*	Differential value °C (°F)	Max. temperature on rod °C (°F)
0-50°C (32-122°F)	450	SRA00005000450	3±1.5°C (5.4±2.7°F)	SUA00005000450	1.5±1°C (2.7±1.8°F)	70°C (158°F)
10-60 °C (50-140°F)	450	SRA01006000450	3±1.5°C (5.4±2.7°F)	SUA01006000450	1.5±1°C (2.7±1.8°F)	80°C (176°F)
30-90°C (86-194°F)	380	SRA03009000380	4±2°C (7.2±3.6°F)	SUA03009000380	2±1°C (3.6±1.8°F)	110°C (230°F)
0-100°C (32-212°F)	230	SRA00010000230	6±3°C (10.8±5.4°F)	SUA00010000230	3±1.5°C (5.4±2.7°F)	130°C (266°F)
40-140°C (104-284°F)	230	SRA04014000230	6±3°C (10.8±5.4°F)	SUA04014000230	3±1.5°C (5.4±2.7°F)	170°C (338°F)
0-150°C (32-302°F)	170	SRA00015000170	8±4°C (14.4±7.2°F)	SUA00015000170	4±2°C (7.2±3.6°F)	180°C (356°F)