Overview
The Hubbell HBL1203I is an extra heavy-duty industrial-grade toggle switch designed for demanding commercial and industrial electrical applications. This 15-ampere, 120/277V AC 3-way switch features a proven toggle actuator with positive snap action, delivering years of reliable operation in high-traffic environments. The ivory finish integrates seamlessly with standard electrical installations.
Key Features
- Extra Heavy Duty Industrial Grade — rated for 50,000 operating cycles with thermoset body and silver-alloy contacts
- 3-Way Configuration — allows control from multiple locations with positive snap action
- Dual Wiring Options — back and side wired terminals accommodate #14–#10 AWG solid or stranded copper wire
- Wide Voltage Range — rated 120/277V AC, suitable for both single-phase and three-phase applications
- Dielectric Strength — withstands 1500V AC minimum for 1 minute per UL 20/CSA standards
- Temperature Rated — operates reliably from –40°C to +75°C continuous
Technical Specifications
- Voltage Rating — 120 to 277V AC
- Amperage — 15A continuous current
- Power Rating — 4155W at rated current
- Switch Function — 3-Way, 2-Position contact configuration
- Contact Material — Silver alloy
- Base Material — Thermoset (UL 94V-2)
- Toggle Material — Nylon
- Wire Accommodation — #14 AWG (minimum) to #10 AWG (maximum)
- Operating Temperature Range — –40°C to +75°C continuous
- Operating Cycles — 50,000 minimum
- Dielectric Voltage — 1500V AC (minimum, 1 minute)
- Overload Rating — 4.8× rated current minimum for 100 cycles
- Dimensions — 4.06″ H × 1.31″ W × 1.87″ D
- Certifications — UL 20, CSA
- Color — Ivory
Typical Applications
- Commercial office buildings and retail environments requiring multi-location lighting or load control
- Industrial facilities, warehouses, and manufacturing plants with demanding duty cycles
- Emergency lighting circuits and backup power distribution systems
- Electrical panels and distribution cabinets in professional installations
- Renovation and retrofit projects where industrial-grade reliability is required
Compatibility & Replacements
Compatible With
- Standard 15A AC branch circuits (residential, commercial, and industrial)
- 120V and 277V single-phase power systems
- Three-phase commercial electrical distribution at 277V
- Back-wired and side-wired outlet boxes and switch plates
- Standard electrical outlet boxes with 1/2″ or 1-1/4″ depth
Replaces / Drop-In Replacement For
- HBL1203 (brown toggle variant of the same series)
- Other 15A 3-way toggle switches with matching dimensions and wiring configurations
- Verify compatibility with your existing installation before ordering
Works With
- Hubbell wiring device systems and accessories
- Standard switch plates and cover kits
- UL-listed electrical boxes and conduit systems
- Both copper and aluminum wire installations (copper recommended)







