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SQUARE D Busway Plug In Unit: Fusible, 400 A Amps, 240/600V AC, PBQ - PQ- and PQB -Type, Square D Fusible Bus Plugs
SQUAREPQ- and PQB -Type, Square D Fusible Bus Plugs

SQUARE D Busway Plug In Unit: Fusible, 400 A Amps, 240/600V AC, PBQ

The SQUARE D PBQ4640G is a PQ- and PQB-Type fusible bus plug unit rated for 400 A at 240/600V AC. It features a PBQ design with an H/K/R fuse class and is compatible with SE Square D I-Line and I-Line II Busway systems.

SKU 3G-OTH-127603

Brand
SQUARE
Item
D Busway Plug In Unit: Fusible, 400 A Amps, 240/600V AC, PBQ
Category
PQ- and PQB -Type, Square D Fusible Bus Plugs
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Technical Specifications

SQUARE
Manufacturer Part Number
PBQ4640G
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SQUARE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SQUARE D PBQ4640G is a PQ- and PQB-Type fusible bus plug unit rated for 400 A at 240/600V AC. It features a PBQ design with an H/K/R fuse class and is compatible with SE Square D I-Line and I-Line II Busway systems.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the SQUARE D PBQ4640G busway plug used for?

The SQUARE D PBQ4640G is a fusible bus plug unit used to tap power from Square D I-Line and I-Line II busway systems. It provides overcurrent protection for branch circuits in industrial and commercial electrical distribution, rated for 400 A at 240/600V AC.

What are the specifications of the SQUARE D PBQ4640G?

The SQUARE D PBQ4640G is a PQ- and PQB-Type fusible bus plug rated for 400 A at 240/600V AC. It uses an H/K/R fuse class and features a PBQ design. It is compatible with SE Square D I-Line and I-Line II Busway systems. The manufacturer part number is PBQ4640G.

Where to buy the SQUARE D PBQ4640G worldwide?

3G Electric supplies the SQUARE D PBQ4640G fusible bus plug unit worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on this Square D component.

How to select the correct SQUARE D bus plug for your busway?

To select the correct SQUARE D bus plug, verify your busway system is I-Line or I-Line II. Match the plug's voltage (240/600V AC), amperage (400 A), and fuse class (H/K/R) to your load requirements. The PBQ4640G is designed for Square D systems; consult a qualified electrician for proper sizing.

Used in

Common applications for SQUARE
Industrial power distribution — Square D HU362AWC non-fusible safety switch for disconnecting three-phase loads up to 60 A.
Busway branch circuits — Square D PQ4203G fusible bus plug for overcurrent protection in I-Line busway systems.
Panelboard surge protection — Square D HL4IMA24C SPD for transient voltage suppression in 277/480V AC wye systems.
Power distribution in control panels — Square D 9080LBA263106 open distribution block for splitting 400 kcmil conductors.
Machine control stations — Square D 9001BG303 push-button station for open/close/stop operations in industrial machinery.
Motor starting and protection — Square D 8536SBG2V02H30S NEMA starter for non-reversing three-phase motor control up to 18 A.

SQUARE Products

3G Electric supplies SQUARE pq- and pqb -type, square d fusible bus plugs. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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SQUARE D Busway Plug In Unit: Fusible, 60 A Amps, 600V AC, PQ, H/K/R, 3 Phase, 3 Wire with Ground (MPN PQ3606G). Key specifications — attr195666: 600V AC; attr195667: PQ; attr195668: R; attr195669: SE Square D I-Line and I-Line II Busway; attr211121: SQUARE D.
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SQUARE D Busway Plug In Unit: Fusible, 100 A Amps, 240V AC, PQ, H/K/R, 3 Phase, 3 Wire with Ground (MPN PQ3210G). Key specifications — attr195666: 240V AC; attr195667: PQ; attr195668: R; attr195669: SE Square D I-Line and I-Line II Busway; attr211121: SQUARE D.
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SQUARE D Busway Plug In Unit: Fusible, 60 A Amps, 120/208/240V AC, PQ, H/K/R (MPN PQ4206G). Key specifications — attr195666: 120/208/240V AC; attr195667: PQ; attr195668: H; attr195669: SE Square D I-Line and I-Line II Busway; attr211121: SQUARE D.
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SQUARE D Busway Plug In Unit: Fusible, 100 A Amps, 600V AC, PQ, H/K/R, 3 Phase, 3 Wire with Ground (MPN PQ3610G). Key specifications — attr195666: 600V AC; attr195667: PQ; attr195668: K; attr195669: SE Square D I-Line and I-Line II Busway; attr211121: SQUARE D.
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SQUARE D Busway Plug In Unit: Fusible, 200 A Amps, 240V AC, PS, H/K/R, 3 Phase, 4 Wire with Ground (MPN PS4220G). Key specifications — attr195666: 240V AC; attr195667: PS; attr195668: R; attr195669: SE Square D I-Line and I-Line II Busway on Vertical Riser Applications Only; attr211121: SQUARE D.
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SQUARE D Busway Plug In Unit: Fusible, 200 A Amps, 240V AC, PS, H/K/R, 3 Phase, 4 Wire with Ground (MPN PS4220G). Key specifications — attr195666: 240V AC; attr195667: PS; attr195668: R; attr195669: SE Square D I-Line and I-Line II Busway on Vertical Riser Applications Only; attr211121: SQUARE D.