Gianneschi 03RE05003 — 5KW Three-Phase Boiler Heating Element with SIC+REG Thermostat Control
If you're maintaining or restoring a Gianneschi hot water boiler, the 03RE05003 is the purpose-built replacement heating element you need. Rated at 5 kilowatts and engineered for three-phase 230/400V electrical systems, this Incoloy-sheathed resistance delivers efficient, stable heat transfer directly into the boiler tank — and it's built to last. The Incoloy alloy sheath resists corrosion and scaling in hot water environments far better than standard stainless or copper alternatives, which is exactly why Gianneschi specifies it across their boiler line.
What sets this element apart from generic alternatives is the integrated SIC+REG (safety cutout + regulating thermostat) configuration. This dual-thermostat setup gives you both an adjustable temperature regulator and a protective safety cutout in a single assembly, ensuring the boiler heats reliably to your set point while guarding against overtemperature conditions. Whether you're servicing a commercial water heating system, an industrial facility hot water supply, or a large-capacity boiler installation, the 03RE05003 restores your Gianneschi unit to full factory specification without compromise.
Key Features
- Genuine Gianneschi OEM replacement heating element
- Incoloy alloy sheath construction for superior corrosion and scale resistance
- Integrated SIC+REG dual-thermostat assembly — regulating thermostat plus independent safety cutout
- Three-phase design for balanced load distribution across all three phases
- Compatible with Gianneschi boilers from the standard series (80 to 400 liters)
- Long service life under continuous hot water system operation
- Magnesium anode-compatible installation environment
Applications
- Replacement heating element for Gianneschi VPO, V-series, and standard boiler models
- Commercial and light industrial hot water systems
- Large-capacity domestic water heating installations
- Facilities with three-phase electrical supply requiring 5KW immersion heating
- Hot water supply systems in hospitality, manufacturing, and multi-unit buildings
Specifications
- Part Number: 03RE05003
- Power Output: 5 KW
- Voltage: 230/400V
- Phase: Three-Phase (3PH)
- Thermostat Type: SIC+REG (Safety Cutout + Regulating Thermostat)
- Sheath Material: Incoloy Alloy
- Compatible System: Gianneschi hot water boilers, standard series
Frequently Asked Questions
Q: What does SIC+REG mean on the Gianneschi 03RE05003?
SIC stands for Safety Cutout — a protective thermostat that permanently disconnects the element if a dangerous overtemperature is reached. REG stands for Regulating Thermostat, which allows the user to set and maintain a target water temperature during normal operation. Together, they provide both everyday temperature control and a fail-safe thermal protection layer in one integrated assembly.
Q: Is the 03RE05003 compatible with single-phase electrical systems?
No. This element is rated for three-phase 230/400V systems only. Installing it on a single-phase supply will result in unbalanced load, incorrect power output, and potential damage to the element or electrical installation. Confirm your supply is three-phase before ordering.
Q: Can the 03RE05003 be used in any brand of boiler, or only Gianneschi?
This is an OEM Gianneschi spare part engineered specifically for Gianneschi boiler models. While the electrical ratings may match other manufacturers' specifications, physical dimensions, flange configuration, and thermostat wiring may differ. It is intended for use in Gianneschi boilers only.
Q: How does Incoloy compare to stainless steel for immersion heating elements?
Incoloy is a nickel-iron-chromium alloy that outperforms standard stainless steel in high-temperature water environments. It resists oxidation, scaling, and pitting more effectively, particularly in systems that cycle frequently or operate at sustained elevated temperatures. This is why Gianneschi specifies Incoloy for long-lasting boiler resistance elements.
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