---
lang: "en"
title: "ST-FRE Capillary frost protection thermostat"
sku: "ST-FRE-1"
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brand: "MARCOM S.r.l."
end_of_life: "false"
---

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ST-FRE Capillary frost protection thermostat. IP44, 6-meter capillary, automatic reset

The ST-FRE range of frost protection thermostats provides a switching output based on the average temperature sensed along a two or six-meter capillary sensor. A common application is frost protection for fresh air intakes or air conditioning systems, to prevent ice formation on filters, fans and coils. The capillary is secured in a matrix across the duct, downstream of the pre-heater or frost coil.

## Technical Specifications

- Control range -30 to +10°C
- Differential:
- ST-FRE-1 & 3 from 2 to 16°C
- ST-FRE-2 & 4 2.5°C (fixed)
- Switch rating:
- 230Vac 24(10)A
- 24Vdc 3A
- Manual reset on low temperature
- (ST-FRE-2 & 4)
- Housing material ABS
- Housing dimensions 86 x 75 x 44 mm
- 130 x 130 x 100 mm (IP65)
- Capillary:
- Material Copper
- Vapour charge
- Maximum temperature +150°C
- Dimensions 6m or 2m x 1.8mm dia.
- Environmental range:
- Housing -50 to +70°C
- Storage -50 to +70°C
- Sensing range -55 to +180°C
- Vibration resistance 4g (10 to 1000 Hz)
- Protection IP44 (optional IP65 housing kit)
- Country of origin Czech Republic
- Compliance LVD, CE and UKCA Mark

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Source: https://shop.marcomweb.it/en/converters-sensors/st-fre-capillary-frost-protection-thermostat

MARCOM S.r.l. — a trusted supplier for industrial automation and building automation.