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Snap action bimetal disc thermostat, ½” disc. 12 mm thickness, 16A 250V Type 4903

Snap action bimetal disc thermostat, ½” disc. 12 mm thickness

Weight	0.3 kg
Dimensions	20 × 20 × 20 mm
Electrical rating	16A
Bracket material	Aluminum, Stainless steel

Opening temperature (°C)

Closing temperature (°C)

Bracket type

Bracket material

Terminal type

Angle between terminal and bracket

Clear

TECHNICAL FEATURES

Case: Phenolic resin (ceramic on request)

Sensing element: Bimetal disc

Calibration: Factory fixed setting, from 15°C to 150°C, 5 to 302°F F (200°C, 392°F with ceramic body). Not adjustable.

Standard calibration tolerances ±4°C to ±6°C, ±39.2°F à 42.8°F upon models

Terminals: 6.3 or 4.8 quick connect , or welding terminals

Differential: Factory set, from 10°C to 25°C, 50°F to 77°F

Mounting: with or without bracket

Main Bracket models:

• Loose bracket, two oval holes 3.2 x 3.5, for M3 screws, 24.5 mm distance

• Flat fixed bracket, two oval holes 3.2 x 3.5, for M3 screws, 24.5 mm distance

• Flat cup bracket, two oval holes 3.2 x 4.2, for M3 screws, 24 mm distance

• M4 or M5 center stud on request

Cap materials: stainless steel (SS) or aluminum (AL)

Ratings:

CSA: AC 125V/15A, AC250V/8A
VDE: AC 250V/16A
UL: AC120V/15A, AC240V/10A

Main bracket types

No bracket Loose bracket Flat fixed bracket Extended cup bracket

Main terminal types

Angle between terminals and bracket

MAIN REFERENCES (usually available from stock*)

Show references

These thermostats can be fitted inside various housings, overmolded and wired*. Some examples:

Dia 18 mm tubular pocket	Waterproof tube mounting	Waterproof, with electrical contact protection	Waterproof, with M6 thread	Waterproof, ½” fitting
Waterproof, M20 fitting	Waterproof, Cnomo connector	Waterproof, automotive connector	Pipe mounting with connection box	Cable output, with flexible boot

*These assemblies are made in the UL certified wiring harnesses production line of JPC

Downloads

Technical specifications sheet

Datasheet 4903 Snap action bimetal disc thermostat, ½” disc. 12 mm thickness

Technical informations associated to this product

Thermostats types
It is currently the thermostats family where quantities are the most important. Numerous configurations exist, and the current trend is simplification and footprint reduction.
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.
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.
Heat tracing applications
To reflect the maximum temperatures allowed by the insulating polymers, the powers of flexible heating cables are generally between 5 and 30W/meter, exceptionally 40W/m and 60W/m for self-regulating cables.

References	Open °C/°F**	Tolerance ±°C/ ±°F	Close °C/°F	Tolerance ±°C/ ±°F	Bracket Nr	Bracket material	Terminal Nr	Angle terminal- bracket
4903EJ00905CCSV037	10/50	3/37.4	5/41	4/39.2	1	AL	E	N/A
4903EJ00905CCSVM37	10/50	3/37.4	5/41	4/39.2	2	AL	E	N/A
4903EJ01808CL6VM37	18/64.4	3/37.4	10/50	4/39.2	2	AL	A	N/A
4903EJ04010CCSVF44	40/104	3/37.4	30/86	3/37.4	4	SS	G	45°
4903EJ04512CL6V037	45/113	3/37.4	33/91.4	4/39.2	1	AL	A	N/A
4903EJ04512CL6VM37	45/113	3/37.4	33/91.4	4/39.2	2	AL	A	N/A
4903EJ05010DL6VM39	50/122	4/39.2	40/104	5/41	2	AL	A	90
4903EJ05010DCSVF47	50/122	4/39.2	40/104	3/37.4	1	SS	G	N/A
4903EJ05510DCSVF44	55/131	4/39.2	45/113	3/37.4	4	SS	G	45°
4903EJ06010CL6HM37	60/140	4/39.2	50/122	5/41	2	AL	B	N/A
4903EJ06010CL6VM37	60/140	4/39.2	50/122	5/41	2	AL	A	N/A
4903EJ06010DCSV037	60/140	4/39.2	50/122	5/41	1	AL	E	N/A
4903EJ06010DCSVM37	60/140	4/39.2	50/122	5/41	2	AL	E	N/A
4903EK07010CL6VM37	60/140	4/39.2	70/158	5/41	2	AL	A	N/A
4903EJ06010DCSVF34	60/140	4/39.2	50/122	3/37.4	4	AL	G	45°
4903EJ06015DCSVF34	60/140	4/39.2	45/113	4/39.2	4	AL	G	45°
4903EJ06510CL6V037	65/149	4/39.2	55/131	5/41	1	AL	A	N/A
4903EJ06510DL6VF39	65/149	4/39.2	55/131	5/41	4	AL	A	90
4903EJ06510DCSVF47	65/149	4/39.2	55/131	3/37.4	1	SS	G	N/A
4903EJ07020DL6VM37	70/158	4/39.2	50122	5/41	2	AL	A	N/A
4903EJ07010CL6VF37	70/158	4/39.2	60/140	5/41	4	AL	A	90
4903EJ07010DCSVF34	70/158	4/39.2	60/140	3/37.4	4	AL	G	45°
4903EJ07510DCSVF44	75/167	4/39.2	65/149	3/37.4	4	SS	G	45°
4903EJ07510DCSVF34	75/167	4/39.2	65/149	3/37.4	4	AL	G	45°
4903EJ08016DL6HM37	80/176	4/39.2	64/147.2	5/41	2	AL	B	N/A
4903EJ08818DL6VM37	88/190.4	4/39.2	70/158	5/41	2	AL	A	N/A
4903EJ09510CCSVF44	95/203	3/3/37.4	85/185	3/37.4	4	SS	G	45°

Snap action bimetal disc thermostat, ½” disc. 12 mm thickness, 16A 250V Type 4903

Main bracket types

Main terminal types

Angle between terminals and bracket

MAIN REFERENCES (usually available from stock*)

Downloads

Technical specifications sheet

Related products

Technical informations associated to this product

Thermostats types

Electrical contacts

Thermostats installation

Heat tracing applications

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