Square D > On-line Catalog > Products > Safety Switches > Heavy Duty Safety Switches–Special: Accessories	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 -

Heavy Duty Safety Switches–Special

 

Accessories

 

	Rainproof Bolt-On Hubs—For Use On NEMA 3R Enclosure
	Conduit Size	3/4	1	1-1/4	1-1/2	2	2-1/2	3	3-1/2	4	Closing Cap
	Hub Cat. No.	B075	B100	B125	B150	B200	B250	B300	B350	B400	BCAP
	$ Price Each	22.20	22.20	22.20	22.20	40.90	68.00	124.00	200.00	245.00	2.50
	(DE1A)
	NEMA 3R rainproof enclosures with Cat. No. ending in RB have a bolt-on closing cap factory-installed. Order bolt-on hubs separately from table above. For more details see page 1-13. Hubs through size 21/2 can be directly installed on RB devices. Devices requiring 3" or larger hubs must have holes cut in the field. Gaskets are provided on 3" and larger hubs. All hubs are UL Listed for indoor and rainproof applications and suitable for use with conduit having ANSI standard taper pipe thread.
	Watertight Hubs—For Use On NEMA 4, 4X and 5 Stainless Steel and NEMA 12 Enclosures
	Conduit Trade Size	1/2	3/4	1	1-1/4	1-1/2	2	2-1/22	3	3-1/2	4
	Standard-Zinc Hub Cat. No.	H050	H075	H100	H125	H150	H200	H250	H300	H350	H400
	Zinc $ Price Each	20.70	30.00	31.40	36.00	55.00	80.00	92.00	118.00	188.00	254.00
	Chrome Plated Hub Cat. No.	H050CP	H075CP	H100CP	H125CP	H150CP	H200CP	—	—	—	—

Electrical Interlock Kits

Electrical interlocks for heavy duty 30–1200 A safety switches are available factory-installed or in kit form for field installation. Each kit contains instructions for proper field mounting. A pivot arm operates from switch mechanism, breaking the control circuit before the main switch blades break. Switches with electrical interlocks installed are UL Listed. For factory-installed electrical interlocks add EI (for one contact) or EI2 (for two contacts) suffix to catalog number.

 

Table 3.22:

Electrical Interlock Kit a

Switch Rating (A)	Series Number (See pages 3-12, 3-13)	Electrical Interlock Kit Cat. No. b	$ Price	Factory-Installed $ Price
30	F1, F5–F7	EIK031c d	145.00	239.00
		EIK032 c d
	F3	EIK1	207.00	301.00
		EIK2
60	F1-F3 F5–F7 (600 V)	EIK1	207.00	301.00
		EIK2
	F4 F5–F6 (240 V)	EIK031e	145.00	239.00
		EIK032e
100–200	F2–F7	EIK1	207.00	301.00
		EIK2
400–1200	E1–E4	EIK40601	355.00	449.00
		EIK40602

a	See page 3-7 for electrical interlocks on NEMA 4X fiberglass reinforced polyester and Krydon®.

b	Electrical interlock kit catalog numbers with 1 suffix indicates one normally open and one normally closed contact; 2 indicates two normally open and two normally closed contacts. Kits are UL Listed.

c	HU461AWK uses EK3061 or EK3062.

d	The following series -F5–F7 devices use EIK-1,2: H3612, H3612A, H3612AWK, H3612RB, H461, H461DS, H461AWK, HU461, HU461DS, HU661DS, HU661AWK, H361AWA, H361AWC, HU361AWA and HU361AWC.

e	H362WA, HU362WA, H362WC, H362AWA, HU362AWA, H362AWC, HU362AWC, and H2212AWK use EIK1 or EIK2 electric interlock.

 

Table 3.23:

Electrical Interlock Contact Ratings f

Interlock Type	AC - 50 or 60 Hz				DC
	Volts	Make	Break	Cont.	Volts	Make & Break	Cont.
Cat. No. ending with a 1 utilize a 9007A01 limit switch.
1 NO/1 NC CONTACT	120	40 A	15 A	15 A	115	0.50 A	15 A
	240	20 A	10 A	15 A	230	0.25 A	15 A
	480	10 A	6 A	15 A	—	—	—
	600	8 A	5 A	15 A	600	0.05 A	15 A
Cat. No. ending with a 2 utilize a 9007C03 limit switch.
2 NO/2 NC CONTACTS	120	30 A	3.0 A	10 A	115	1.0 A	10 A
	240	15 A	1.5 A	10 A	230	0.30 A	10 A
	480	7.5 A	0.75 A	10 A	—	—	—
	600	6.0 A	0.60 A	10 A	600	0.10 A	10 A

f	Single pole single throw interlock kits are rated 1/2 hp @ 110 and 220 Vac.