Overview
The Hubbell HBLDS3 Circuit-Lock Disconnect Switch is a 30 Amp, 3-pole industrial-grade motor disconnect rated for 600V AC. UL listed as a manual motor controller and suitable as a motor disconnect, this switch meets NEC code requirements for line-of-sight motor disconnects. Built with a non-metallic NEMA 4X enclosure and an OSHA-compliant lockable red handle, the HBLDS3 is engineered for extra-heavy-duty industrial applications including conveyor systems, industrial fans, and machinery requiring reliable electrical isolation.
Key Features
- 3-pole configuration with screw terminal connections for secure wiring
- Snap action lever actuator ensures positive on/off switching
- NEMA 4X enclosure with IP69k rating provides corrosion and water ingress protection
- Red handle locks in OFF position for OSHA Lockout/Tagout (LOTO) compliance
- UV-stabilized, non-metallic corrosion-resistant construction
- Supplied with ¾” NPT raintight conduit fitting for outdoor and damp environments
- UL94-5VA and V0 flammability rated for safety-critical applications
Technical Specifications
- Amperage Rating: 30 Amps
- Voltage Rating: 600V AC RMS
- Poles: 3-Pole
- Horsepower: 15 hp
- Load Rating: 18,000 W
- Contact Configuration: Two Position (ON/OFF)
- Contact Rating: 30A at full rated current and voltage
- Actuator Type: Lever (snap action)
- Terminal Type: Screw Terminals
- Enclosure Type: Non-Metallic NEMA 4X
- Ingress Protection: IP69k
- Dielectric Voltage Withstand: 3000V AC minimum
- Operating Temperature Range: -40°C to +75°C continuous
- Flammability Rating: UL94-5VA and V0
- Included Conduit Fitting: 1× ¾” NPT raintight fitting
Typical Applications
The HBLDS3 is ideal for industrial environments requiring reliable motor control and electrical isolation. Common applications include:
- Conveyor system motor disconnects
- Industrial fan and blower motor control
- Pump and compressor motor disconnect devices
- Outdoor equipment requiring NEMA 4X water and corrosion protection
- Food processing facilities (NSF-certified material options available)
- Manufacturing and assembly line machinery control
Compatibility & Replacements
Compatible With
- NEC 430.102(B) compliant motor control installations
- 3-phase Y system configurations
- Industrial motor controllers and drive systems rated for 600V AC
- Standard electrical conduit systems (¾” NPT coupling)
Replaces / Drop-In Replacement For
The standard HBLDS3 directly replaces other 30A, 3-pole, 600V unfused disconnect switches in similar NEMA 4X enclosures. Related Hubbell Circuit-Lock variants with comparable ratings include HBLDS3AC (with auxiliary contact) and HBLDS3SS (stainless steel). Verify exact specifications with your system integrator before ordering if upgrading from legacy equipment.
Works With
- Manual motor controller installations per NEC Article 430
- OSHA Lockout/Tagout (LOTO) energy isolation procedures
- Industrial control panels and motor control centers (MCCs)
- Standalone motor disconnect applications without additional protective relays
