QMB Fusible Power Distribution Panelboards

When specifications or electrical codes call for a fusible panelboard, the QMB family offers unbeatable performance and time-saving installation features. The reliability of the QMB panelboard make it the product of choice for large commercial and industrial applications.

Features

  • For use on ac or dc systems
  • Underwriters Laboratories ® (UL ®) Listed under File E6294 and File E33139, and CSA File Location LL-1809-75
  • Suitable for use as service equipment
  • Insulated, solid neutral may be bonded to the box with a grounding strap

Standards

QMB fusible panelboards are designed, manufactured, and tested to meet the requirements of the latest revisions of the following standards:

  • UL 50: Enclosures for Electrical Equipment
  • UL 67: Standard for Panelboards
  • CSA C22.2, No. 29-1989: Panelboards and Enclosed Panelboards
  • NEMA PB 1: Panelboards
  • NFPA 70: National Electrical Code ® (NEC ®)
  • Federal Specification W-P-115C Type II Class 1: Fusible Switch Panelboards
Square D logo

For a complete listing of documentation for this product, please consult the Technical Library.

Catalogs
QMB Fusible Panelboards 4620CT9601
QMB Motor Starter Centers Catalog Section 2320CT9701
Data Bulletins
Corner-Grounded Delta (Grounded B Phase) Systems 2700DB0202
Date Code System 0110PD9201
Panelboard Driphood Kit 80043-401-03
QMB/QMJ Fusible Units Replacement Parts 4620DB0901
Switchboard/Panelboard Short-Circuit Current Ratings 2700DB9901
Torque and Cable Information for Panelboards 1600PN119
drawings
OBSOLETE - QMB Main Switch Fusible Panelboards 200 Amp PBA426-OBS
OBSOLETE - QMB Main Switch Fusible Panelboards 400-800 AMP PBA428-OBS
OBSOLETE - QMB MLO Fusible Panelboards 600-1600 Amp PBA427-OBS
OBSOLETE - QMB Fusible Panelboards 200-400 Amp NEMA 3R/12 PBA429-OBS
OBSOLETE - QMB Fusible Panelboards 400-800 AMP NEMA 3R/12 PBA430-OBS
OBSOLETE - QMP MLO Fusible Panelboards 225-400 Amp PBA425-OBS
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_EN
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_FR
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_EN
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_FR
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_EN
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_FR
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_EN
QMB FUSIBLE PANELBOARD 400-800 AMP NEMA 3R/12 PBA436_FR
QMB FUSIBLE PANELBOARDS 200-400 AMP NEMA 3R/12 PBA435
QMB FUSIBLE PANELBOARDS 400-800 AMP NEMA 3R/12 PBA436
QMB MAIN SWITCH FUSIBLE PANELBOARDS 200 AMP PBA432
QMB MAIN SWITCH FUSIBLE PANELBOARDS 400-800 AMP PBA434
QMB MLO FUSIBLE PANELBOARDS 225-400 AMP PBA431
QMB MLO FUSIBLE PANELBOARDS 600-1600 AMP PBA433
Instruction Bulletins
Crimp Lug Adapter Kits 80043-158-05
General Instructions for Proper Handling, Installation, Operation, and Maintenance of Deadfront Distribution Switchboards Rated 600 V or Less PB2.1-2007
General Instructions for Proper Installation, Operation, and Maintenance of Panelboards Rated 600 Volts or Less PB1.1-2007
OEM Mounting Requirements for QED/QMB Interior Bus Assemblies 80237-175-04
QMB / QMJ Fusible Switches and Circuit Breaker Units 40270-589-03
QMB Panelboards 4-Piece Trim Kits 80043-357-04
QMB Panelboards Blank Fillers 80043-136-06
QMB Panelboards Information Manual 80043-334-06
QMB Panelboards Solid Neutral and Bonding Components 80043-268-06
QMB4060R Fuse Rejector Kit 40272-213-02
QMBHW and QMBJW Circuit Breaker Adapter Units Installation 80043-339-04
QMJ High Density Fusible Switchboards Replacement Parts 2740SB9501
SMS Fusible Branch and Main Switches 40281-188-02
Price Lists
Laser™ Service Factory-assembled Panelboards 1600PL0701
Product Marking and Labelings
18-Circuit Panelboard Directory Card (Vertically Numbered) 0120SM1004
30-Circuit Panelboard Directory Card (Vertically Numbered) 0120SM1005
42-Circuit + 24-Circuit Panelboards Directory Cards (Vertically Numbered) 0120SM1006
42-Circuit + 30-Circuit Panelboards Directory Cards (Vertically Numbered) 0120SM1007
42-Circuit + 42-Circuit Panelboards Directory Cards (Horizontally Numbered) 0120SM1001
42-Circuit + 42-Circuit Panelboards Directory Cards (Vertically Numbered) 0120SM1008
42-Circuit + 54-Circuit Panelboards Directory Cards (Horizontally Numbered) 0120SM1002
42-Circuit + 54-Circuit Panelboards Directory Cards (Vertically Numbered) 0120SM1009
54-Circuit + 42-Circuit Panelboards Directory Cards (Horizontally Numbered) 0120SM1003
54-Circuit + 42-Circuit Panelboards Directory Cards (Vertically Numbered) 0120SM1010
trip curves
Bimetallic, Temp. Compensated Relay Design, Thermal Unit Type AR.44-AR40, AC Mag Starter, Size 0 or 1, SB or SC, Form B, Series A, With 3 Thermal Units, Class 8536 Small Encl., (Class 8998, 8999, QMB, I-Line), All Other (larger) Encl., 9065 SEO6B sep. mt. 30068-413
Melting Alloy Relay Design, Thermal Unit Type B1.30-B6.25, AC Magnetic Starter, Size 6, Type SH, Series A, With 3 Thermal Units, Class 8536 Small Enclosure, Motor Control Center (Class 8998, 8999, QMB, I-Line) 30068-348
Melting Alloy Relay Design, Thermal Unit Type B4.85-B70, AC Magnetic Starter, Size 2, Type SD, Series A, With 1,2 Thermal Units, Class 8536 Small Enclosure, QMB, I-LINE 30068-280
Melting Alloy Relay Design, Thermal Unit Type BO.44-B50, AC Magnetic Starter, Size 0,1, Type SB, SC, Series A, Class 8536 Small Enclosure, QMB, I-Line 30068-407
Melting Alloy Relay Design, Thermal Unit Type CC20.9-CC196, AC Magnetic Starter, Size 3, Type SE, Series A, With 3 Thermal Units, Class 8536 Small Enclosure, Motor Control Center (Class 8998, 8999, QMB, I-Line) 30068-299
Melting Alloy Relay Design, Thermal Unit Type CC64.3-CC219, AC Magnetic Starter, Size 4, Type SF, Series A, With 3 Thermal Units, Class 8536 Small Enclosure, Motor Control Center (Class 9889, 8999, QMB, I-Line) 30068-302
Melting Alloy Relay Design, Thermal Unit Type SB0.44-SB88, Magnetic Starter Type S, Manual Starter Type M&T, Separate O/L Relay Type S, C, T, w/ 1, 2, 3 Thermal Units, Sm. Enclosure, MCC (Class 8998, 8999, QMB, I-Line), All Other (larger) Enclosures, Open 30068-490
Selection Index for 30068 Trip Curves, Class 2510, 8536, 9065 30068-index