Square D PBQ4660G I-Line II Busway Plug-In Unit – 600A – 4 Pole – Class J Fusible – 600V – Busway Plug-In Switch

The Square D PBQ4660G is a high-capacity I-Line II busway fusible plug-in unit designed for industrial and commercial power distribution systems. It provides reliable branch circuit protection using Class J fuses and is engineered for 3-phase, 4-wire busway networks. Its plug-in design allows fast installation, expansion, and maintenance in modular electrical distribution systems.

Electrical Ratings

• Current Rating: 600 A
• Voltage Rating: 120 / 208 / 347 / 600 V AC
• Phase: 3 Phase
• Circuit Configuration: 3-Phase, 4-Wire
• Poles: 4 Pole
• Fuse Type: Class J
• Interrupting Rating: 100 kA
• Neutral Type: None
• Application: Busway power distribution system

Protection and Function

• Device Type: Fusible plug-in busway unit
• Protection Method: Class J fuse-based overcurrent protection
• Function: Branch circuit protection in busway systems
• Configuration: 3-fuse + ground system
• Safety Function: Overload and short-circuit protection via fuses
• High fault-current capability for industrial environments

Configuration and Function

• Model Series: PBQ
• Connection Type: Plug-in (I-Line II Busway compatible)
• Used On: I-Line II busway systems
• Sub-category: Busway fusible plug-in switch
• Application: Industrial and commercial electrical distribution

Mechanical and Physical Characteristics

• Heavy-duty modular busway construction
• Designed for high-current 600A applications
• Integral grounding system
• Built for fast installation and system expansion
• Robust industrial enclosure design
• Suitable for harsh electrical environments

Standards and Certifications

• UL 857 listed
• CSA C22.2 compliant
• Manufacturer: Square D / Schneider Electric
• Series: I-Line II PBQ
• UNSPSC: 39131701

Features

• 600A high-capacity fusible busway plug-in unit
• Class J fuse protection for high interrupting performance
• 100 kA fault interrupting rating
• Designed for 3-phase, 4-wire distribution systems
• Plug-in architecture for scalable power systems
• Integral grounding for safety compliance
• Reliable protection in industrial environments
• Modular design for maintenance and expansion

Returns are easy

You may return items within 30 days of delivery for a refund.

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