Electric Heating Elements
in Acid-Resistant Steel
Tubular heaters with an adjustable thermostat for heat exchangers, buffer tanks and mixers — fast heat transfer between the heater and the water, with no need for magnesium anodes.
One Component, Many Applications
The heater housing is made of plastic and fitted with a temperature controller with a safety limiter, allowing the desired temperature to be set and the operating mode to be shown by an indicator light. Heaters are available in single-phase and three-phase versions, ready to be fitted into heat exchangers, buffer tanks or mixers.
Single-Phase Heaters
Single-phase heating elements are used for direct water heating. They consist of a single U-shaped tubular heater and a thermostat sensor guard, mounted in a head with a 6/4" thread (optionally G 5/4").
- Heater diameter: 8.5 mm
- Heater material: 1.4404 / 1.4876 / 2.4858
- Head with mounting thread: G 5/4″, G 6/4″, G2″
- Head material: acid-resistant steel AISI 304
- Heating unit power: 2.0–12.0 kW
- Housing: 100×100×110 mm, ABS V0, black
- Cable entry: M20×1.5 gland
- Protection class: IP54
- Temperature controller: single-phase / three-phase 30–85°C, STB 110°C
Table of typical heating elements — single-phase heaters
| Thread G 5/4″ | Thread G 6/4″ | Power [W] | Voltage [V] | Length L [mm] | Load [W/cm²] |
|---|---|---|---|---|---|
| WP 12.360.20 | WP 15.360.20 | 2000 | 230 | 360 | 8–10 |
| WP 12.360.30 | WP 15.360.30 | 3000 | 230 | 360 | 8–10 |
Price list — single-phase heaters with thermostat
Prices include VAT. Current availability and purchase — in the Margo shop.
Three-Phase Heaters with Temperature Controller
Three-phase heaters, like the single-phase version, are designed for direct water heating. They are built from 3 U-shaped tubular heaters and a thermostat sensor guard mounted in a head with a G 6/4" thread (optionally G2"). The housing is made of plastic with a built-in temperature controller, safety limiter and an indicator light showing operating mode.
- Heater diameter: 8.5 mm
- Heater material: 1.4404 / 1.4876 / 2.4858
- Head with mounting thread: G 6/4″ / G2″
- Head material: acid-resistant steel AISI 304
- Heating unit power: 3.0–15.0 kW
- Housing: 100×100×110 mm, ABS V0, black
- Cable entry: M20×1.5 gland
- Protection class: IP54
- Temperature controller: three-phase 30–75°C, STB 98°C (optional 30–85°C, STB 110°C)
Table of typical heating elements — three-phase heaters
| Thread G 6/4″ | Thread G2″ | Power [kW] | Voltage [V] | Length L [mm] | Load [W/cm²] |
|---|---|---|---|---|---|
| WP 15.250.20 | – | 2.5 | 230/400 | 300 | 5–6 |
| WP 15.350.30 | – | 3.0 | 230/400 | 350 | 5–6 |
| WP 15.450.40 | – | 4.5 | 230/400 | 450 | 5–6 |
| WP 15.650.60 | WP 20.650.60 | 6.0 | 230/400 | 650 | 5–6 |
| WP 15.800.75 | WP 20.800.75 | 7.5 | 230/400 | 800 | 5–6 |
| WP 15.200.20 | – | 2.5 | 400 | 200 | 8–10 |
| WP 15.250.30 | – | 3.0 | 400 | 250 | 8–10 |
| WP 15.350.45 | – | 4.5 | 400 | 350 | 8–10 |
| WP 15.450.60 | WP 20.450.60 | 6.0 | 400 | 450 | 8–10 |
| WP 15.650.90 | WP 20.650.90 | 9.0 | 3×400 | 650 | 8–10 |
| WP 15.800.120 | WP 20.800.120 | 12.0 | 3×400 | 800 | 8–10 |
Heater Selection Calculator
Choose the heat-recovery capacity (buffer tank or mixer) and the process time to check the recommended heater power for a 10°C temperature rise.
Approximate values based on the Margo selection table. For a precise heater selection, contact our team or choose the right power directly in the shop.
Need a Heater for Your Device?
Check our full range of single-phase and three-phase heaters in the shop, or ask us to help select the right power for your exchanger, buffer tank or mixer.