ETI® Snow Switch® Model HSC-24 (25125)
The Snow Switch Model HSC-24 is a 24-volt, pavement-mounted snow and ice sensor designed to reliably detect surface conditions. By ensuring deicing heaters operate only when necessary, the HSC-24 effectively minimizes energy costs without sacrificing snow-melting performance.
This self-contained unit eliminates the need for an additional control panel, featuring an independent relay-contact output that integrates seamlessly with most electric and hydronic heater control systems. The sensor activates at pavement temperatures below 38°F (3.3°C) when moisture—including water, snow, sleet, or ice—is detected.
The required pavement sensor housing (23832) is sold separately.
- Accurate Sensing: Directly monitors pavement conditions to provide precise, reliable system control.
- Self-Contained Design: Operates independently, removing the need for extra control panels.
- Versatile Compatibility: 24-volt operation integrates with a wide range of electric and hydronic systems.
- Advanced Safety: NEC Class 2 circuit ensures safe operation in wet, outdoor locations.
- Easy Verification: Built-in self-test functions allow for quick and simple operational checks.
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Durable Construction: Engineered for a long, trouble-free service life in demanding environments.
NOTE: For International availability please contact BriskHeat.
Since 1949
Activation Temperature:38˚ F (3.3˚ C)
Dimensions:
- Top Diameter: 9.84 cm (3.875 in)
- Top Thickness: 6.35 mm (0.25 in)
- Mounting Depth: 5 cm (2 in)
Supply Voltage:24 Vac +/- 15%
Supply Current:5 mA idle, 0.25 A max.
Snow & Ice Response Time:10 to 20 seconds
Operating Temperature:−40 °C to 70 °C (−40 °F to 158 °F)
Snow/Ice Sense Temperature Range:−30 °C to 3 °C (−22 °F to 38 °F)
Storage Temperature:−50°F to 180°F (−45°C to 82°C)
Lead Length:60 ft (18.3 m) or 200ft (60.96 m) included; may be extended:
- Up to 500’ (152m) using 18 AWG 3-wire jacketed cable
- Up to 2,000' (609m) using 12 AWG 3-wire jacketed cable
Freeze Protection
| Part No. | Description |
|---|---|
| 25125 | HSC-24 Pavement-Mounted Sensor (requires Pavement Sensor Housing) |
| 23832 | Pavement Sensor Housing (not included) |