Square D PBQ3640G I-Line Busway Plug-In Unit – 400A – 3 Pole – Fusible Class J – 600V – I-Line II Busway Accessory

The Square D PBQ3640G is an I-Line II busway fusible plug-in unit designed for high-capacity power distribution systems. It provides reliable overcurrent protection using Class J fuses and is intended for use on Schneider Electric I-Line II busway systems. This plug-in unit enables safe, modular, and scalable power distribution in industrial and commercial electrical installations.

Electrical Ratings

• Current Rating: 400 A
• Voltage Rating: 240 / 600 V AC
• Phase: 3 Phase
• Circuit Configuration: 3-Phase, 3-Wire
• Poles: 3 Pole
• Interrupting Capacity: 100 kA
• Fuse Type: Class J
• Neutral Type: None
• Ground Type: Integral

Protection and Function

• Device Type: Fusible plug-in busway unit
• Protection Method: Class J fuse-based overcurrent protection
• Application Type: Power distribution and branch circuit protection
• Configuration: 3-fuse + ground system
• Safety Function: Short-circuit and overload protection via fuse system

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 units
• Application: Industrial and commercial power distribution

Mechanical and Physical Characteristics

• Compact plug-in modular design
• Designed for fast installation into busway systems
• High fault withstand capability
• Integral grounding system
• Rugged industrial construction for long service life
• Safe hot-plug compatible busway design (system dependent)

Standards and Certifications

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

Features

• 400A high-capacity fusible plug-in unit
• Uses Class J fuses for high interrupting performance
• 100 kA interrupting rating for strong fault protection
• I-Line II busway compatibility for modular distribution
• Plug-in design for fast installation and maintenance
• Integral grounding system for safety
• Ideal for industrial and commercial power distribution systems
• Scalable busway architecture for flexible system design
• Reliable overcurrent protection via fuse technology

Returns are easy

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

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