Product Data Sheet SK5668 Panelboard Mounting Kit, NQOB List Price $62.00 USD Availability Stock Item: This item is normally stocked in our distribution facility. Technical Characteristics Used for Replacing Q1 and Q1B Main Circuit Breaker in NQO and NQOB Panelboard, Application Main Circuit Breaker Obsolete Q1B, Available QOB Circuit Breaker Type NQOB Shipping and Ordering Category 00014 - Panelboards, Ready to Install Parts Discount Schedule PE1A Article Number 785901838739 Package Quantity 10 Weight 0.2 lbs. Availability Code Stock Item: This item is normally stocked in our distribution facility. Returnability Y As standards, specifications, and designs change from time to time, please ask for confirmation of the information given in this document. Generated: 06/20/2009 04:55:36 © 2009 Schneider Electric. All rights reserved. 1 Obsolescent Circuit Circuit Breakers for NQO, NQOB and NQOD Panelboards, Branch www.us.schneider-electric.com Breakers Circuit Breakers and Mounting Assemblies for ML Panelboards FOR CURRENT INFORMATION Replacing Obsolescent Q1 and Q1B Circuit Breakers In NQO, NQOB and NQOD Panelboards Q1 and Q1B circuit breakers have been replaced by QO and QOB circuit breakers. Table 1 below is used for replacing 1P, 2P or 3P Q1 and Q1B circuit breakers with QO and QOB branch circuit breakers in NQO, NQOB and NQOD panelboards. Table 2 below is used for replacing Q1 and Q1B main circuit breakers in NQO and NQOB panelboards. Table 11.4: Replacing Q1 and Q1B Circuit Breakers with QO and QOB Branch Circuit Breakers Branch Circuit Breaker Panelboard Mounting Assembly $ Price Type Requiredc Obsolete Available 2P QO NQO Q1 QO SK5669a 62.00 NQOB Q1B QOB SK5668 62.00 NQOD QO SKNQOD225b 50.00 NQOD QOB SKNQOD225b 50.00 Table 11.5: Replacing Q1 and Q1B Main Circuit Breakers in NQO and NQOB Panelboards Main Circuit Breaker Panelboard Mounting Assembly Retaining Kit $ Price $ Price Type Requiredc Requiredd Obsolete Available NQO Q1 QO SK5669a 62.00 PK1MB 4.80 NQOB Q1B QOB SK5668 62.00 — — a Mounting assembly SK5669 is used to mount both Q1 and QO circuit breakers. Not required for replacement purposes. b 225 A maximum. For 400-600 ampere circuit breaker mounting assembly, see Class 1630 Service Bulletin. c Discount Schedule PE1A. d Discount Schedule DE3A. 2P QOB Branch Circuit Breakers and Mounting Assemblies for ML Panelboards Replacement circuit breakers for ML panelboards are determined by the manufacture date of the panel and the panel depth. (See chart below) Table 11.6: Replacement Circuit Breakers in ML Panelboards Panel Depth Availability of Replacement Circuit Manufacture Date Breakers in. mm 1948–1956 8.63 219 No Replacements Available 1958–1961 10.00 254 No Replacements Available 1962–1968 10.63 270 Refer to Tables Below The tables below are used for replacing or adding circuit breakers to 10-5/8 inch deep ML panelboards manufactured from 1962-1968 and for switchboards manufactured from 1962-–1968. Table 11.7: Replacement of Existing Circuit Breakers Mounting Height Mounting Single or Twin Mounting Existing Circuit Ampere Cat. No. Replacement Poles Assembly (Mounting Assembly Breaker Rating Prefix Circuit Breaker Required in. mm Required Assembly) $ Price ML-1 15–100 A 4.50 114 989 or 999 FAL SK4515e 3P Twin 1091.00 ML-3 100–225 A 6.00 152 997 KAL SK4516e 3P Twin 1189.00 LA (W) 225–400 8.25 210 LA LAL SK4517 3P Single 1423.00 MA (W) 125–1000 A 8.25 210 MA MAL SK4578 3P Single 1855.00 FAL 15–100 A 4.50 114 FAL FAL 3P Twin No KAL 70–250 A 4.50 114 KAL KAL 3P Twin Mounting N/A Assembly LAL 125–400 A 6.00 152 LAL LAL 3P Single 2P Q1 Required MAL 300–1000 A 9.00 229 MAL MAL 3P Single MAL 125–250 A 9.00 229 MAL LAL SK4517 3P Single 1423.00 Table 11.8: Adding New Circuit Breakers Mounting Mounting Height Single or Twin Mounting Cat. No. Poles Ampere Rating Assembly (Mounting Assembly Prefix Required in. mm Required Assembly) $ Price FAL 15–100 A SK4515 4.50 114 3P Twin 1091.00 KAL 70–250 A SK4516 4.50 114 3P Twin 1189.00 LAL 125–400 A SK4517 6.00 152 3P Single 1423.00 MAL 300–1000 A SK4578 9.00 229 3P Single 1855.00 e Mounting assemblies for twin-mounted circuit breakers will only accept the same family and configuration of circuit breakers, i.e., FAL and FAL. © 2007 Schneider Electric Discount 11-5 DE5A DE3A PE1A All Rights Reserved Schedule OBSOLETE CIRCUIT BREAKERS 11