Leviton CS115-2I Commercial Toggle Switch Review

The Leviton CS115-2I delivers 120/277V capability in a commercial-grade toggle switch, making it the go-to upgrade when builder-grade switches can’t handle the job. At 15 amps with motor control ratings of 1/2 HP at 120V and 2 HP at 240V-277V, this switch bridges the gap between residential and commercial electrical work without the commercial price tag.

Voltage Versatility That Actually Matters

The 277V rating opens doors that standard 120V switches can’t touch. Montana contractors working on agricultural buildings, schools, or small commercial spaces need this flexibility. That 2 HP motor control at 277V handles ventilation fans, small pumps, and equipment that residential switches would fry attempting.

The real advantage shows up in mixed-use buildings where some circuits run 277V for lighting efficiency. One switch model handles both voltages instead of stocking separate commercial and residential switches. The switch accommodates #14-#12 AWG wire, though the ground truth data shows it accepts up to #10 solid wire — even better for commercial installations running heavier gauge.

Build Quality Beyond Residential Standards

Thermoplastic PBT base with nylon cover beats standard thermoplastic in every metric that matters. The -40°C to 65°C operating temperature range handles Montana’s temperature swings from brutal winters to scorching equipment rooms. That’s -40°F to 149°F for those keeping track — well beyond what any residential switch promises.

Specification	CS115-2I Value
Temperature Rating	-40°C to 65°C
Voltage Rating	120/277V AC
Dielectric Voltage	1500V for 1 minute
Temperature Rise	Maximum 30°C above ambient
Torque Range	14-18 in-lb
Warranty	10-Year Limited

The galvanized steel strap won’t corrode in humid mechanical rooms or agricultural buildings. Polycarbonate actuator material resists cracking when some apprentice overtightens the faceplate screws. These material choices matter when the switch lives in a dusty shop or temperature-cycling equipment room.

Reviewers praise the switch for its solid ‘click’, ease of installation, and significant improvement in durability over builder-grade residential switches. Over 2,000 reviews across major retail platforms back up the durability claims with 4.7 out of 5 stars.

Installation That Works With Real-World Wiring

Side-wire terminals with #8-32 steel screws handle the abuse of commercial installation. No back-stab terminals that fail after a few years. The 14-18 in-lb torque spec provides enough clamping force without stripping threads — critical when you’re installing dozens in a commercial retrofit.

Installation follows standard practice but the commercial-grade terminals make a difference:

• Turn off power at the breaker, strip wire approximately 1/2 inch, loop the wire clockwise around terminals
• Tighten terminal screws to 14-18 in-lb of torque
• Secure to wall box and attach wallplate

The switch fits all standard toggle wallplates, so retrofits don’t require new covers. Compatible with both 120V and 277V AC circuits using copper wire only.

Versus residential grade switches, you get higher grade materials, higher voltage rating up to 277V, and a 10-year warranty versus 2-year. The price difference pays for itself the first time you don’t have to replace a failed switch in a commercial space.

FAQ

What’s included with the CS115-2I switch? The package includes one toggle switch and two mounting screws. Nothing fancy, just what you need for installation.

Can this switch handle motor loads? Yes. The switch is rated for 1/2 HP at 120V and 2 HP at 240V-277V, suitable for ventilation fans, pumps, and similar motor loads within those ratings.

What certifications does this switch carry? The switch is UL Listed, CSA Certified, and NOM Certified, meeting compliance standards including UL 20, CSA C22.2 No. 111, NEMA WD-1 & WD-6, and ANSI C-73.

How does the 10-year warranty compare to standard switches? Commercial grade switches like this carry a 10-year warranty versus the 2-year warranty typical of residential switches, reflecting the upgraded materials and construction quality.

Why does the 277V rating matter for Montana contractors? The 277V capability allows use on commercial lighting circuits common in agricultural buildings, schools, and retail spaces. Standard 120V residential switches can’t handle these applications, forcing contractors to stock separate commercial switches. This model covers both needs.