A whole-home surge protector is cheap insurance for furnaces, heat pumps, appliances and electronics. The Intermatic IG1240RC3 is a 120/240 VAC single-phase SPD that can be installed as Type 1 on the line side of the service or Type 2 on the load side of the panel. It gives six modes of protection with TPMOV thermally protected varistors, a green status LED, and a Type 3R plastic enclosure for indoor or outdoor mounting.
Why electricians pick it
- Type 1 or Type 2 in one unit, so one SKU covers meter-side and panel-side installs.
- Six modes: L1-N, L2-N, L1-G, L2-G, N-G and L1-L2.
- TPMOV technology is built to avoid the hazardous failure modes of standard MOVs.
- Green LED shows protection status at a glance.
- cCSAus certified to ANSI/UL 1449 5th Edition; 5-year product warranty plus a connected equipment warranty.
Specifications
| Spec |
Detail |
| Brand |
Intermatic |
| Model |
IG1240RC3 |
| Type |
Type 1 or Type 2 surge protective device |
| System |
120/240 VAC, single-phase, 4 wire leads |
| Modes of protection |
6 |
| Nominal discharge current |
20 kA |
| Max surge current per phase |
50 kA |
| VPR |
700 V L-N and N-G; 1,200 V L-G and L-L |
| MCOV |
150 V L-N; 300 V L-L |
| Enclosure |
Type 3R plastic, grey, indoor/outdoor |
| Certification |
cCSAus, ANSI/UL 1449 5th Ed. |
| Warranty |
5-year product; connected equipment up to 10,000 US dollars (lesser of fair market value or homeowner's insurance deductible) |
Pro tip from the counter
For a Type 2 install, Intermatic's instructions give a 240 V, 20 A, 2-pole breaker as the maximum recommended size, so don't land it on a larger spare breaker. On a finished basement wall where a surface box looks out of place, add the IG1240FMP33 flush mount kit.
Best for: whole-home surge protection, new service upgrades, heat pump and HVAC installs, meter-base Type 1 installs, cottages and rural homes with frequent storms
Downloads: Installation instructions (PDF) · Technical data (PDF)
Ships Canada-wide from our Vaughan, ON counter. Contractors installing these on every service can get trade pricing via a quote or (905) 553-7171.