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

Bracket material

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Description

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*)

 

 

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

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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.