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Supplemental and Obsolescence Digest 174

Molded Case Circuit Breakers

Mag-Gard® Motor Circuit Protector and Automatic Molded-case Switch

Class 680, 685

Mag-Gard®—Motor Circuit Protector

Instantaneous trip magnetic only circuit breakers have a single adjustment which simultaneously sets the magnetic trip level of each individual pole. Mag-Gard circuit breakers comply with NEC® requirements for providing motor circuit protection when installed as part of a UL Listed combination controller having motor overload protection. Interrupting ratings are established for these UL Recognized Components only when they are used in combination with motor starters with properly sized overload relays and contactors.

Mag-Gard circuit breakers will accept the same lugs and accessories as equivalent thermal-magnetic circuit breakers. Mag-Gard circuit breakers are available with I-Line construction. H-construction Mag-Gard circuit breakers are also available.

 

 

Table 3.42:

Magnetic Only 3–1200 A 600 Vac, 50/60 Hz

Ampere Rating		Adjustablea Trip Range	3P only
			Cat. No.	$ Price
FAL	3 A 7 A 15 A 30 A 30 A 50 A 50 A 100 A 100 A 150 A	8–28 A 18–70 A 50–180 A 50–180 A 100–350 A 75–260 A 150–580 A 150–580 A 300–1100 A 450–1100 A	FAL3600311M FAL3600712M FAL3601513M FAL3603013M FAL3603015M FAL3605014M FAL3605016M FAL3610016M FAL3610018M FAL3615024M	604.00 604.00 604.00 604.00 604.00 767.00 767.00 916.00 916.00 1259.00
KAL	150 A	750–1500 A	KAL3615026M	906.00
	250 A	400–800 A 500–1000 A 625–1250 A 750–1500 A 875–1750 A 1000–2000 A 1125–2250 A 1250–2500 A 1500–3000 A	KAL3625021M KAL3625022M KAL3625025M KAL3625026M KAL3625029M KAL3625030M KAL3625031M KAL3625032M KAL3625033Mc	1733.00 1733.00 1733.00 1733.00 1733.00 1733.00 1733.00 1733.00 1733.00
NALb	1200 A	4000–8000 A 4500–9000 A 5000–10000 A	NAL36120045M NAL36120046M NAL36120047M	12699.00 12699.00 12699.00

a	UL magnetic trip setting tolerances are -20%/+30% from the nominal values shown.

b	Each ampere rating can be ordered with any designated trip range for the frame by adding the proper suffix to the catalog numbers.

c	Not UL Recognized.

N-frame Automatic Molded Case Switches

Automatic molded case switches open instantaneously at a factory preset magnetic trip point, calibrated to protect only the molded case switch itself, when it is subjected to high fault currents. The trip point is nonadjustable and provides no overload or low level fault protection.

Molded case switches open when the handle is switched to the OFF position or in response to an auxiliary tripping device such as a shunt trip.

Automatic switches will accept the same lugs and accessories as equivalent thermal-magnetic circuit breakers.

Automatic molded case switches are UL Listed per UL 489 and are CSA® Certified.

Table 3.43:

Automatic Molded Case Switches 600 Vac Automatic

Ampere Rating	Poles	3P		Short Circuit Current Ratinga			Trip Point (Automatic Switch)b		Lug Kit Installed
		Cat. No.	$ Price	240 Vac	480 Vac	600 Vac	AC	DC
1200 A	2	NCL2600012M	7258.00	125k	100 kA	65 kA	16000 A	N/A	AL1200NE6
1200 A	3	NCL3600012M	8380.00	125k	100 kA	65 kA	16000 A	N/A	AL1200NE6

a	The short circuit current rating is the fault current, at rated voltage, that the molded case switch will withstand without damage when protected by a circuit breaker with an equal continuous current rating.

b	UL magnetic trip setting tolerances are -20% and +30% from the nominal values shown.

 

 

 

DE2	Discount Schedule

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Related Topics

Accessories  Page 3-24—3-26

OptionalLugs Page 3-27—3-28

Dimensions Page 3-36