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HB
Single Pole Standard Precision Snap-acting Switches
Features/Benefits
- Low differential travel, high repeatability
- Long life—150,000 cycles typical
- Single and double pole circuitry
- Sealed actuator and case
Typical Applications
- Thermostats
- Motors
- Industrial controls
Specifications
- CONTACT RATING: From low level* to 20 AMPS @ 480 V AC;see ELECTRICAL RATING option section for complete listings.
- ELECTRICAL LIFE: 150,000 cycles at 20 AMPS @ 250 V AC.consult Customer Service Center for typical life at other ratings.
- INSULATION RESISTANCE: 1,000 M ohm min.
- DIELECTRIC STRENGTH: 1,500 Vrms min. @ sea level.
- OPERATING TEMPERATURE: –67ºF to 302ºF (–55ºC to 150ºC).
- OPERATING FORCE: From 4 oz. to 26 oz. max. at actuator button available.
- MOUNTING SCREWS: Torque 3 in/lbs max.(Note: Exceeding 3 in/lbs torque may change operating characteristics and increase the possibility of cracking switch case).
- TERMINAL SCREWS: Torque 4 in/lbs max.
- PANEL MOUNTING BUSHING: Torque 4-6 in/lbs max.
- DEGREE OF PROTECTION: IP65; Dust-proof, water splash and dew condensation.
- Low Level=conditions where no arcing occurs during switching, i.e., 0.4 VA max. @ 20 V AC or DC max.
Materials
- SWITCH HOUSING: Heat resistant/electrical grade phenolic.
- INSERTS: Brass alloy.
- ACTUATOR BUTTON: Moisture resistant phenolic.
- SPRING: Copper alloy.
- PIVOT: Brass alloy.
- MOVABLE CONTACTS: Gold alloy for ratings 1 AMP or less.Fine silver for ratings greater than 1 AMP and motor load ratings less than 1/2 HP @ 125 V AC. Silver alloy for motor load ratings 1/2 HP @ 125 V AC or greater.
- STATIONARY CONTACTS: Gold alloy for ratings 1 AMP or less.Fine silver welded to copper base for ratings greater than 1 AMP and motor load ratings less than 1/2 HP @ 125 V AC.Silver alloy on copper base for motor load ratings 1/2 HP @ 125 V AC or greater.
- TERMINALS: Brass alloy, bright tin plated.