Disc Self Hold Thermal CUT OUT & Resistor Combination

KSD301 / KSD302 thermostat disc self hold thermal cut out is a safety device that prevents a heater from overheating or faulting:

How thermostat disc self hold thermal cut out works?
When the temperature reaches a predetermined level, the thermostat opens, and the contacts remain open. The only way to reset the device is to remove power from the circuit.

½” (13mm) self-hold bimetal disc thermostat

KSD302 Self Hold Thermal Cutout Switch

self-hold thermal protector thermal overload protector

thermostat disc self hold thermal cut out Benefits:
A self hold thermal cut out offers extra safety compared to an automatic reset device, and it works similarly to a manual reset device without the need for a push button.
Types of self hold thermal cut outs
Some types of self hold thermal cut outs include:
KSD301 / KSD302: A combination of a thermostat and a resistor, where the resistor is located below the thermostat’s contact arm.
KSD301 / KSD302 EAW SO: Similar to an auto-reset type, but with an internal heating resistor that prevents the bimetal disc from auto-resetting.
KSD302-T: A 1/2” disc PTC thermal cut-out that features easy mounting, rapid heat transmission, high durability, and high precision.

FEATURES
Recognized UL component, tested to UL standard 873
Available with surface, air sensing, well or cavity type mountings
High switching current 25~60 AMP/240 volts
Reliable temperature performance over the life of the device
Ultimate safety device in critical applications
Also available for 115VAC, 24VAC/DC, 48VAC/DC, applications
Various mounting configurations along with different terminations available

CODE	OPEN TEMP	RESET TEMP	CODE	OPEN TEMP	RESET TEMP
45	45±5°C	≥33°C	140	140±5°C	100±15°C
50	50±5°C	≥35°C	145	145±5°C	100±15°C
55	55±5°C	42±6°C	150	150±5°C	105±15°C
60	60±5°C	45±8°C	155	155±5°C	110±15°C
65	65±5°C	48±10°C	160	160±5°C	115±15°C
70	70±5°C	50±12°C	165	165±5°C	120±15°C
75	75±5°C	53±14°C	170	170±3°C	155±5°C
80	80±5°C	55±15°C	175	175±5°C	130±15°C
85	85±5°C	60±15°C	180	180±5°C	135±15°C
90	90±5°C	65±15°C	185	185±5°C	140±15°C
95	95±5°C	70±15°C	190	190±5°C	145±15°C
100	100±5°C	70±15°C	195	195±5°C	150±15°C
105	105±5°C	75±15°C	200	200±5°C	155±15°C
110	110±5°C	75±15°C	205	205±5°C	160±15°C
115	115±5°C	80±15°C	210	210±5°C	165±15°C
120	120±5°C	85±15°C	215	215±5°C	170±15°C
125	125±5°C	85±15°C	220	220±5°C	175±15°C
130	130±5°C	90±15°C	225	225±5°C	180±15°C
135	135±5°C	95±15°C	230	230±5°C	185±15°C