Thermo Clip™ Series

Fixed-Wire Overtemperature Indicator Clips for Electrical Equipment

Overview Image


The Thermo Clip™ Series serve as overtemperature indicators for electrical assets. Using a patented Thermochromic technology, these easily-installed clips provide a color-changing visual indicator that work in tandem with the large format windows from IRISS as part of the visual component in the inspection process prior to and between infrared and ultrasound inspections. With a memory-effect feature, these non-conducive clips can also let inspectors see a permanent record of overtemperature excursions in intermittently loaded systems.

Simple Application

Easy and quick push-on installation means no de-energizing or disconnection is needed.

Easy to Read

The thermochromic material provides a highly-visible predictive warning when viewing through inspection windows

Broad Coverage

Multiple models available to provide for varying wire sizes 17AWG to 750MCM wires. Suitable for circuits rated 36kVAC/600VDC .


H1 H2 H3 H4 H5
17-12 AWG Wire Range 10-6 AWG Wire Range 4-2/0 AWG Wire Range 3/0-350 MCM Wire Range 400-750 MCM Wire Range
2.3-4.2 mm OD 4.8-7.1 mm OD 8-13.6 mm OD 13.8-23 mm OD 23-31 mm OD
2.3-4.2 mm OD 4.8-7.1 mm OD 8-13.6 mm OD 13.8-23 mm OD 23-31 mm OD



Physical Properties
Base Materials 5-10% Thermochromic Masterbatch. 90-95% Polypropylene, flame retardant to UL94V0 self extinguishing rating, non-halogenated.
Initial Color Change Temperature 53°C
Permanent Color Change Temperature 71°C
Tolerance +/- 1°C
Response Time 5 to 20 Seconds
Storage Store at room temperature & humidity (i.e. 16°C to 27°C & 40% to 60% RH)
Product Lifespan Replace overtemperature connection indicators within a maximum lifespan interval of 5 years.
Dielectric Strength 44Kv Per mm
Wire Insulation Rating 36kVAC/600VDC
*Installation: Thermo ClipTM Series Clips are designed to be push fitted only onto the outer insulation of a cable, adjacent (15mm-30mm distance) to its connection terminal. Thermo ClipTM should not be inserted
anywhere into the current carrying path of the circuit or directly attached to bare live metal parts of the circuit.
*Caution: Thermo ClipTM Series are designed for use on electrical cables and as such installation must be assessed by a competent electrician licensed to applicable local requirements prior to their application.
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