Watlow Firerod

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; this directly improves the heat transfer and efficiency of the heater.

Watlow FIREROD Cartridge Heaters Brochure (PDF)

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Firerod

441 items

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  • Watlow firerod cartridge heaters J4A90-E12
    J4A90-E12 Watlow Cartridge Heater 1/2ODx4L 240V 250W
    J4A90-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 240VAC, 250 Watts total @ 46W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A73-E12
    J4A73-E12 Watlow Cartridge Heater 1/2ODx4L 240V 1000W
    J4A73-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 240VAC, 1000 Watts total @ 184W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A68-E12
    J4A68-E12 Watlow Cartridge Heater 1/2ODx4L 240V 400W
    J4A68-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 240VAC, 400 Watts total @ 74W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A26-E12
    J4A26-E12 Watlow Cartridge Heater 1/2ODx4L 240V 300W
    J4A26-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 240VAC, 300 Watts total @ 56W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A242-E12
    J4A242-E12 Watlow Cartridge Heater 1/2ODx4L 120V 550W
    J4A242-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 120VAC, 550 Watts total @ 100W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A198-E12
    J4A198-E12 Watlow Cartridge Heater 1/2ODx4L 120V 750W
    J4A198-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 120VAC, 750 Watts total @ 138W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A16-E12
    J4A16-E12 Watlow Cartridge Heater 1/2ODx4L 120V 500W
    J4A16-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 120VAC, 500 Watts total @ 92W/in2 density, 6 in solid copper pins. No flexible lead options available.
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  • Watlow firerod cartridge heaters J4A139-E12
    J4A139-E12 Watlow Cartridge Heater 1/2ODx4L 120V 400W
    J4A139-E12

    Watlow

    Product Type: Cartridge Heaters

    Watlow FIREROD Cartridge Heater, 1/2 in OD x 4 in sheath, 120VAC, 400 Watts total @ 74W/in2 density, 6 in solid copper pins. No flexible lead options available.
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