Overview
The Hubbell HBLDS10 Circuit-Lock Disconnect Switch is a non-fused, 3-pole disconnect switch rated for 100 amps at 600 volts AC. This NEMA 4X enclosure unit is constructed from impact and corrosion-resistant UV-stabilized non-metallic material with IP69K protection, making it ideal for harsh industrial environments including food processing, automotive manufacturing, and outdoor equipment installations. The HBLDS10 is UL-listed and suitable as a motor disconnect per NEC Section 430.102(B).
Key Features
- Non-Fused Design: Simple disconnect function without fuse replacement; UL-certified for current interrupting at full rated current and voltage
- NEMA 4X / IP69K Enclosure: Corrosion and impact-resistant composite material withstands wash-down, caustic cleaning agents, and UV exposure
- NSF Food Processing Certification: Meets hygiene requirements for food and beverage production facilities
- Lockable 2-Position Lever Handle: OSHA Lockout/Tagout compliant; highly visible red handle for safe circuit isolation
- Screw Terminal Connections: External fully adjustable mounting feet; reversible interior accommodates top or bottom conduit opening
- Motor Disconnect Rated: Suitable as a motor disconnect with 50 hp rating; supports 6000 operating cycles at full load
Technical Specifications
- Amperage Rating: 100 A
- Voltage Rating: 600 VAC RMS
- Number of Poles: 3 (Three-pole)
- Enclosure Type: NEMA 4X, IP69K
- Enclosure Material: UV-stabilized non-metallic composite (VALOX®)
- Actuator Type: Lockable 2-position lever handle
- Connection Type: Screw terminals
- Maximum Continuous Voltage: 600V AC RMS
- Dielectric Strength: Withstands 3000V AC minimum
- Operating Temperature Range: −40°C to 75°C
- Load Capacity: 60,000 W (50 hp at 600V)
- Operating Cycles: 6000 at full rated load
- Flammability Rating: UL 94-5VA and V0
- UL / Certification: UL-listed; suitable as motor disconnect; NSF-certified for food processing
- Mounting: External fully adjustable feet; foot-mount design
- Conduit Hub Size: 1¼-inch NPT hub supplied
- Dimensions: 8 in H × 6.87 in W × 5.94 in D
Typical Applications
- Food & Beverage Processing: NSF-certified for hygienic equipment disconnect in production environments requiring frequent wash-down
- Heavy-Duty Industrial: Conveyor systems, industrial fans, pump motors, and other machinery requiring isolated circuit control
- Outdoor / Corrosive Environments: Water treatment, marine equipment, and caustic processing where UV and chemical resistance are critical
- Motor Control: NEC-compliant line-of-sight disconnect for motor controllers and driven equipment
- Wash-Down and Wet Locations: IP69K rating ensures reliable operation in high-pressure water and steam applications
Compatibility & Replacements
Compatible With
- Three-phase AC induction motors (50 hp and below at 600V)
- VFD and soft-starter motor control systems
- Plastic or metallic conduit installations (internal frame bonds all grounds)
- Standard 1¼-inch NPT conduit entries
- OSHA Lockout/Tagout safety procedures
Replaces / Drop-In Replacement For
- Earlier Hubbell Circuit-Lock HBLDS10 units (standard non-fused variant)
- Generic 100A 600VAC non-fused disconnect switches in NEMA 4X enclosures (verify mounting footprint and terminal layout before substitution)
Works With
- All industrial motor control systems requiring manual circuit isolation
- Power distribution systems and motor starting equipment
- NEMA-compliant electrical panels and enclosures
- Standard three-phase 480V, 600V, and lower AC power systems
- Auxiliary contact modules (HBLDS10AC variant available)
