SE Digest 178

Separated Distribution and Split Bus NF and NQ Panelboards

Separated Distribution and Split Bus Panelboards

www.se.com/us Refer to Panelboards Table 9.82: Separated Distribution Interiors (Cabled Between Sections) Separated Distribution Interiors (cabled between sections) Max. No. of Available Pole Spaces

Square D NF and NQ Separated Distribution and Split Bus Panelboards come Factory Assembled with copper bus, with or without an integral Main Circuit Breaker. A wide variety of configurations may be submitted for quotation via Square D QuoteFAST, and may be quoted or ordered by Authorized Distributors using SE Advantage or E-Way Quote Management. Features: • Multiple branch section configurations (pole spaces per section): – Split Bus: 18-30; 30-18; 30-30; 30-18-18 – Separated Distribution: 30-18-18; 18-18-18 • Up to 400 A Mains rating for NQ; up to 250 A Mains in NF panelboards Notes: Enclosure width / depth: 20” / 5.75” minimum. Subfeed breaker or lugs, feed through lugs not available at top or bottom ends of panel. • Split Bus - feeder breaker (125 A max.) in downstream split section back-fed from feeder breaker in upstream main or split section. • Segregated Distribution - cables may be removed in the field. Downstream Split section may have same rating as Main.

BoxHeight (in.)

Main Cir cuit Brea ker

Main Amp acity MLO

Main Lug Only

Prod uct Family

Voltage Phases Main

Split Split 2

30 18 18 62 74 18 18 18 62 74 30 18 18 80 92 18 18 18 80 92 30 18 18 80 92 18 18 18 74 86

225A

NQ

3Ph

400A

NF 250A 3Ph

Table 9.83: Bus Bar Interiors (125 A Max. Split Amps)

Max. No. of Available Pole Spaces

Split Bus Bar Interiors (125 A Max. Split Amps)

BoxHeight (in.)

Main Cir cuit Bre aker

Main Amp acity MLO

Main Lug Only

Prod uct Family

Voltage Phases Main

Split Split 2

9 PANELBOARDS

1,3Ph 18 30 — 44 56 1,3Ph 30 18 — 44 56 1,3Ph 30 30 — 44 56 3Ph 30 18 18 50 62 3Ph 18 30 — 56 68 1,3Ph 30 18 — 56 68 1,3Ph 30 30 — 62 74 3Ph 30 18 18 74 86

NQ 225A

NF 250A

9-37

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