Square D PQ4210G I-Line II Busway Plug-In Unit – 100A – 4 Pole – Class J Fusible Switch – 120/208V – Aluminum Enclosure

The Square D PQ4210G is a compact I-Line II busway plug-in fusible unit designed for low-current branch distribution in industrial and commercial power systems. It provides safe and reliable overcurrent protection using Class J fuses and is intended for use in 3-phase busway systems. Its plug-in design enables fast installation, easy maintenance, and scalable system expansion.

Electrical Ratings

• Current Rating: 100 A
• Voltage Rating: 120 / 208 VAC
• Phase: 3 Phase
• Circuit Configuration: 3-Phase, 3-Wire
• Poles: 4 Pole
• Fuse Type: Class J
• Interrupting Rating: 200 kA
• Neutral Type: None
• Ground Type: Integral
• Application: Busway power distribution system

Protection and Function

• Device Type: Fusible plug-in busway switch
• Protection Method: Class J fuse-based overcurrent protection
• Function: Branch circuit protection and load switching
• Configuration: 3 fuse + ground system
• Safety Function: Overcurrent and short-circuit protection via fuses
• High interrupting capacity for industrial-grade fault conditions

Configuration and Function

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

Mechanical and Physical Characteristics

• Compact modular busway design
• Plug-in installation for fast deployment and replacement
• Suitable for 100A branch distribution circuits
• Designed for scalable electrical systems
• Lightweight aluminum enclosure construction
• Engineered for industrial and commercial environments

Standards and Certifications

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

Returns are easy

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

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