Robertshaw
Robertshaw 5300-406 millivolt thermostat 200-375 °F 36 in capillary
Millivolt thermostat controls 200-375 °F cooking equipment with a 36 in capillary and 13/16 in stem
- TypeLearning Thermostats
- Millivolt operation suits gas appliances without mains power
- 200 to 375 °F dial range covers common cooking temperatures
- 36 inch capillary allows flexible bulb placement
- 3/8 by 5-5/8 inch bulb fits standard mounting openings
- Replaces KX-433 for direct service swaps
Millivolt thermostat for cooking equipment
The Robertshaw 5300-406 is a millivolt thermostat designed for electric cooking control. It operates without external power, making it suitable for gas-fired appliances that generate their own pilot voltage. The dial range spans 200 to 375 degrees Fahrenheit. It replaces the KX-433 model.
Steady temperature regulation across long cooking
Under sustained load the bulb and capillary assembly maintains consistent control throughout extended heating periods. The 36 inch capillary allows flexible routing from the control panel to the sensing bulb. A 3/8 inch by 5-5/8 inch bulb provides stable thermal response. The millivolt circuit avoids drift caused by line-voltage fluctuations.
Compact stem and capillary mounting for retrofit
A 13/16 inch stem length fits standard panel cut-outs without modification. The capillary length supports reach across larger oven cavities or fryer vats. Millivolt terminals accept pilot-generated current directly, simplifying wiring on existing equipment. No external transformer or control board is required for operation.
Highlights
- Millivolt operation suits gas appliances without mains power
- 200 to 375 °F dial range covers common cooking temperatures
- 36 inch capillary allows flexible bulb placement
- 3/8 by 5-5/8 inch bulb fits standard mounting openings
- Replaces KX-433 for direct service swaps
Specifications
| Brand | ROBERTSHAW |
|---|---|
| Type | Learning Thermostats |
Questions about this item
How much heat does the 5300-406 thermostat generate when it regulates a 200-375 °F cooking appliance all day?
The millivolt thermostat itself produces negligible heat; it simply opens or closes the gas valve based on the 36 in capillary bulb temperature.
What gas valve and pilot assembly must already be installed for this 5300-406 millivolt thermostat to operate?
A standing-pilot millivolt gas valve rated for the appliance’s BTU output is required; the thermostat connects directly to the valve’s TH/TP terminals.
Will the 13/16 in stem and 3/8 x 5-5/8 in bulb fit the existing KX-433 mounting bracket on my older oven?
Yes, the 5300-406 is listed as a direct KX-433 replacement with identical stem length and bulb dimensions.
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