Square D > On-line Catalog > Products > Safety Switches > General Duty Safety Switches: Light Duty	Search

Digest 174 Quick Page Locator Enter a page number from our paper catalog to go directly to that page in our online catalog. Example: 5 - 3

Section - Page -

General Duty Safety Switches

Light Duty

Class 3130

General Duty—Up To 100 kA Short Circuit Current Rating With Proper Current Limiting Fusing

General duty safety switches are designed for residential and commercial applications where economy is a prime consideration. Typical loads are lighting, air conditioning, and appliances. They are suitable for use as service equipment when equipped with a factory-installed neutral assembly or a field-installed service grounding kit.

General duty safety switches are UL Listed, File E2875, and meet or exceed the NEMA Standard KS1.

400 and 600 A general duty switches (NEMA 1 only) will accept Class J fuses and are UL Listed for use on systems with up to 100 kA available fault current. 600 A requires Class J fuse kit—GDJK600 (page 3-3). 400 A requires moving load base.

Class T 400–800 A general duty safety switches use 300 Vac Class T fuses and are UL Listed for use on systems with up to 100 kA available fault current.

 

UL Listed Short Circuit Withstand Rating
Switch Type	Fuse Class	Short Circuit Rating
Fusible	Plug	10 kA
	H	10 kA
	K	10 kA
	J	100 kA
	R	100 kA
	T	100 kA
Non-Fusiblea	H	10 kA
	K	10 kA
	J	100 kA
	R	100 kAb
	T	100 kA
a The UL Listed short-circuit current rating for Square D general duty, not fusible switches is based on the switch being used in conjunction with fuses. Evaluation of non-fusible switches in conjunction with molded case circuit breakers has not been performed. If a UL Listed short-circuit current rating is required, this non-fusible switch must be replaced with a Square D general duty fusible safety switch equipped with the appropriate class and size fusing. The UL Listed short-circuit current rating of the fusible switch is typically as follows: when used with Class H & K fuses—10,000 A, Class R and J fuses—100,000 A. Consult the wiring diagram of the switch to verify the UL Listed short-circuit current rating. b 50 kA for 60 A non-fusible switch.

 

Table 3.1:

Fusible

System	A	Fuse	NEMA 1 Indoor		NEMA 3Ra Rainproof		Class R Fuse Kits Field-Installableb		Horsepower Ratings
									Std. (Fast Acting One-Time Fuses)		Max. (Dual Element Time-Delay Fuses)
			Cat. No.	$ Price	Cat. No.	$ Price	Cat. No.	$ Price
									1Ø	3Ø	1Ø	3Ø
2 Wire (1 Blade and Fuseholder, 1 Neutral)—120 Vac
	30	Plug	Use Light Duty Device for This Application (see below)						—	—	—	—
	30	Cart.	Use 3 Wire Devices for this application.						—	—	—	—
3 Wire (2 Blades and Fuseholders, 1 Neutral)—120/240 Vac (Plug), 240 Vac (Cart.) Maximum
	30	Plug	D211N	60.00	D211NRB	118.00	—	—	1-1/2	—	3	—
	30	Cart.	D221N	81.00	D221NRB	125.00	DRK30	17.10	1-1/2	3 c	3	7-1/2c
	60	Cart.	D222N	137.00	D222NRB	217.00	RFK03H	17.00	3	7-1/2c	10	15 c
	100	Cart.	D223N	284.00	D223NRB	320.00	RFK10	31.80	7-1/2	15 c	15	30c
	200	Cart.	D224Ne	589.00	D224NRBe	800.00	HRK1020	31.80	15	25 c	—	60 c
	400	Cart.	D225N	1703.00	D225NR	2306.00	DRK40	74.00	—	—	—	—
	600	Cart.	D226N	3406.00	D226NR	4379.00	DRK600	74.00	—	—	—	—
4 Wire (3 Blades and Fuseholders, 1 Neutral)—240 Vac Maximum
	30	Cart.	D321N	125.00	D321NRB	195.00	DRK30	17.10	1-1/2	3	3	7-1/2
	60	Cart.	D322N	217.00	D322NRB	294.00	RFK03H	17.00	3	7-1/2d	10	15d
	100	Cart.	D323N	376.00	D323NRB	544.00	RFK10	31.80	7-1/2	15d	15	30d
	200	Cart.	D324Ne	801.00	D324NRBe	974.00	HRK1020	31.80	15	25d	—	60d
	400	Cart.	D325N	2075.00	D325NR