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Robertshaw 5300-041 thermostat with 48-inch capillary tube and 3/8-inch sensing bulb

Robertshaw

Robertshaw 5300-041 S-23-48 thermostat

SKU CH-53G5-DWWJQ

Electric thermostat with a 48-inch capillary tube and 23-41 temperature range

  • Product typeLearning Thermostats
  • Learning thermostat adapts to system cycles
  • 48-inch capillary tube reaches remote sensing points
  • 3/8-inch bulb diameter fits standard wells
  • 1/4-inch stem length suits common mounts
  • Compatible with Blickman, Chromalox, Electro-Therm and others

Robertshaw 5300-041 thermostat for HVAC systems

The Robertshaw 5300-041 is a learning thermostat designed for electric heating equipment. It fits Blickman, Chromalox, Consolidated Communications, Electro-Therm, Indeeco, Labline, Pego, Robertshaw, Therm Coil, Uni-Line and Wellman Thermal brands. The capillary tube measures 48 in with a 3/8 in sensing bulb diameter and 4 1/2 in bulb length.

Capillary sensing maintains steady control

A 48 in capillary tube connects the sensing bulb to the switch mechanism, allowing the bulb to sit in the air stream while the body mounts remotely. The liquid-filled bulb expands predictably under sustained temperature, giving consistent cycling rather than short bursts. This behaviour suits equipment that runs for long periods.

Straightforward bulb and stem mounting

The 1/4 in stem length and 3/8 in bulb diameter fit standard wells on compatible brands. Installers insert the bulb, secure the capillary and wire the switch. The main issue arises when the 48 in capillary is too short for the routing path or when the bulb diameter mismatches an existing well.

How it compares

Measured against everything we stock in Thermostats & Thermostat Accessories, at today’s prices. Recalculated every night.

Price $101.99
Pricier than about 61% of the 286 comparable items (median $78.49).

Specifications

Product
Brand nameROBERTSHAW
Product typeLearning Thermostats

Questions about this item

Does the 48 in capillary tube length affect heat dissipation or power draw during continuous operation?

The 48 in capillary tube is a mechanical sensing element; it carries no electrical current and adds no heat or power consumption.

What mounting hardware or control wiring must I already have to install the 1/4 in stem thermostat?

You need a compatible control panel cut-out for the 1/4 in stem and wiring terminals that match the thermostat's electrical rating.

Will the 3/8 in sensing bulb fit the existing wells on my older Blickman or Chromalox equipment?

The 3/8 in bulb diameter matches the standard well size used by Blickman, Chromalox and the other listed compatible brands.

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