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 |
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*)
* Products usually available from stock in one of the Ultimheat Alliance members ** Temperature in red= close on rise model *** Ceramic body
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°
These thermostats can be fitted inside various housings, overmolded and wired*. Some examples:
![]() Dia 18 mm tubular pocket |
![]() Waterproof |
![]() Waterproof, with electrical contact protection |
![]() Waterproof, with M6 thread |
![]() Waterproof, ½” fitting |
![]() Waterproof, |
![]() 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
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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.