Heavy Duty Fusible Safety Switches

Product Highlights

• ABB Heavy Duty safety switch family
• Fusible disconnect-switch construction
• 600V AC rating
• 3-pole configuration
• 3-wire configuration
• 30A, 60A, 100A, and 200A options
• NEMA 1 indoor configurations
• NEMA 3R outdoor configurations
• Copper and aluminum conductor compatibility
• Motor horsepower ratings vary by switch size
• Designed for commercial and industrial applications
• GSA compliant
• UL Listed
• cUL Listed
• Eight catalog-number options

ABB identifies its Heavy Duty safety switch line as intended for commercial and industrial applications where durable disconnecting equipment is required.

The models in this product group use fusible, 3-pole, 3-wire construction and carry a 600V AC voltage rating. Indoor models use NEMA 1 enclosures, while corresponding models ending in R use NEMA 3R outdoor enclosures.

Conductor ranges increase with switch ampere rating, and published motor horsepower ratings vary by operating voltage, phase, and fuse configuration.

These switches are fusible, allowing properly selected fuses to provide overcurrent protection as part of the safety-switch assembly.

Fuse class, ampere rating, time-delay characteristics, motor requirements, conductor protection, and available fault current should all be considered when selecting the complete installation.

ABB publishes multiple horsepower ratings for these switches based on system voltage, phase configuration, and whether standard or time-delay fusing is used.

• Confirm the required 30A, 60A, 100A, or 200A rating.
• Verify that a 3-pole, 3-wire fusible safety switch is appropriate for the application.
• Confirm the system voltage does not exceed the 600V AC switch rating.
• Select NEMA 1 for compatible indoor installations.
• Select NEMA 3R for compatible outdoor installations.
• Select the proper fuse class, type, and ampere rating separately.
• Verify conductor material and size against the applicable published range.
• Confirm motor horsepower requirements where applicable.
• Verify available fault current and complete equipment ratings.
• Maintain NEMA 3R enclosure integrity on outdoor models.
• Follow ABB terminal and conductor requirements.
• Maintain applicable electrical working clearances.
• De-energize equipment before installation or service.
• Verify absence of voltage before working on electrical equipment.
• Installation and service should be performed by qualified electrical personnel.
• Follow current ABB instructions and applicable electrical codes.