Watlow HR12 FIREROD 0009M J7A79 Industrial Cartridge Heater 250W 120V

Overview

The Watlow HR12 FIREROD 0009M is a 250W, 120V industrial cartridge heater engineered for thermal management in industrial equipment and HVAC applications. The FIREROD cartridge heater revolutionized the heating element industry in 1954 when it was patented as the first swaged cartridge heater; the mechanical procedure of swaging reduces the diameter of the heater by compacting the unit, which directly improves heat transfer and efficiency. This compact insertion heater provides dependable temperature control for equipment requiring precise, uniform heat distribution.

Key Features

• Built with finest materials and construction methods backed by extensive quality assurance programs; provides superior heat transfer, uniform temperatures, resistance to oxidation and corrosion, and long life even at high temperatures
• Swaged magnesium oxide (MgO) insulation for improved thermal conductivity and dielectric strength
• Incoloy 800 sheath material for superior oxidation and corrosion resistance
• Compact cylindrical design suitable for insertion-type heating applications
• Used condition unit—fully functional and ready for deployment

Technical Specifications

The following specifications are based on the unit designation and typical FIREROD product configuration:

Typical Applications

• HVAC and refrigeration equipment heating
• Industrial process heating and temperature control
• Thermal management in manufacturing equipment
• Insertion-type heater applications where space is limited
• Equipment requiring precise, uniform heat distribution

Compatibility & Replacements

Compatible With

• Industrial heating systems and controllers rated for 120V AC circuits
• Standard insertion-heater mounting designs (verify bore diameter and length)
• Equipment requiring cartridge-style heater elements
• Thermal regulation applications up to standard FIREROD operating temperatures

Replaces / Drop-In Replacement For

Verify compatibility with your system integrator before ordering. The part number 0009M J7A79 may directly replace other Watlow FIREROD configurations with identical voltage, wattage, and physical dimensions. Always confirm bore diameter, sheath length, and lead configuration with the original equipment manufacturer or your controls engineer.

Works With

• Industrial temperature controllers and regulators
• Standard 120V AC power supplies
• Thermostat and control panel integrations
• Equipment supporting modular heater element replacement