EC&M #50 Youngstown Limit Switch

YOUNGSTOWN® Power Limit Switches are used on crane hoist drives to limit over travel in the hoisting
direction. EC&M #50 Youngstown Limit Switch is the best in its class. Here is more information about EC&M #50 Youngstown Limit Switch:
• Operated by crane hoist hook block
• Interrupts hoist motor current directly
The standard limit switch is supplied for right hand operation and consists of:
• 2–Normally open and 2 – normally closed mechanically interlocked power contacts for simplex
switches and 4 – normally open and 4 – normally closed contacts for duplex switches
• 1–General purpose NEMA Type 1 enclosure
• 1–Standard straight operating arm

Category: Contactors & Limit Switches

Parts List Available:

→ NO. 50 DC YOUNGSTOWN LIMIT STOP DUPLEX TYPE FFG SERIES A

Description
Parts List

Description

Kor-Pak is pleased to offer this EC&M #50 Youngstown Limit Switch, Class 6170 Type F61 Series A, 1350 Cont. Amps, 230 Volts, 500 Max HP. Product is new and being offered at a very attractive price. Contact a Kor-Pak representative today to learn more.

Right Hand Operation
The limit switch is arranged for right hand operation when the reset weight and cable are on the right
side (when facing the operating arm).
Standard Operating Arm
The standard operating arm is used when the weight and cable can be suspended beneath the limit
switch.
Control Circuit Interlocks
Control circuit interlocks are provided on the power limit switch by an externally mounted control circuit
limit switch which is operated by the power limit switch operating arm.
For a Type AG limit switch, a Class 9007 Type B limit switch is used.
For Types BG through FFG limit switches, a Class 9007 Type FT limit switch is used.

REF	OEM PN	DESCRIPTION	KOR-PAK PN
1A	51068-084-50	Top Cover	KP9028001
2	RS-130	Special Cotter	KP7028015
3	51068-046-51	Arc Chute	KP9228003
4A	51068-087-51	Stationary Contact Assembly	KP9028004
5A	51068-087-50	Stationary Contact Assembly	KP9028005
6	51068-039-50	BlowoutEar	KP9028006
7	50512-001-27	Blowout Insulating Washer	KP9028007
8	51068-038-50	Blowout Guard	KP9028008
9	21401-24280	Cap Screw	KP7228009
10	23701-00240	Pl. Lk. Washer	KP7128063
11	21401-24400	H.I Cap Screw	KP7328043
12	23601-00240	Washer	KP7228047
13	50512-051-01	Spacer	KP9028013
14	50512-001-25	Insulating Washer	KP9028014
15	21601-20240	Cap Screw	KP9028015
16	23701-00200	Pl. Lk. Washer	KP7128013
17	50502-776-11	Blowout Core	KP9028017
18	50512-052-16	Insulator for Blowout Core	KP9028018
19	51068-036-50	Contact Bracker Assembly	KP9028019
20	50502-103-12	Stud	KP9028020
21	51068-040-01	Blowout Ear Spacer	KP9028021
22	23002-00200	Nut	KP7128042
23	50005-015-01	Contact Tip	KP9028023
24	21601-28480	Cap Screw	KP9028024
25	23701-00280	Pl. Lock Washer	KP7228025
26	23601-00282	Washer	KP9028026
27A	51068-089-50	Base, R.H	KP9028027
28A	51068-088-50	Base, L.H	KP9028028
29	51068-042-50	Bus Bar, R.H	KP9028029
30	51068-043-50	Bus Bar, L.H	KP9028030
31	21401-24740	Cap Screw	KP9028031
32	23003-00240	Jam Nut	KP9028077
33	23002-00240	H.I Nut	KP9028033
34	51068-022-50	Bus Bar, R.H	KP9028034
35	51068-022-51	Bus Bar, L.H	KP9028035
36	21401-28560	Cap Screw	KP9028036
37	23601-00280	Washer	KP8628035
38	23002-00280	Nut	KP9028038
39	51068-014-50	Bus Bar Support	KP9028039
40	51068-041-50	Bus Bar, R.H	KP9028049
41	51068-041-51	Bus Bar, L.H	KP9028041
42	21401-24480	H.I Cap Screw	KP8628055
43	51068-009-01	Bus Support	KP9028043
44	21401-24660	H. St. Cap	KP8628038
45	51068-022-03	Bus Bar	KP9028045
46	51068-044-01	Bus Bar	KP9028046
47	23003-00280	Jam Nut	KP9028047
48	21401-28800	Cap Screw	KP9028048
49	23002-00320	Nut	KP9028040
50	51068-041-01	Bus Bar	KP9028050
51	51068-090-50	Bus Bar, R.H	KP9028051
52	51068-090-51	Bus Bar, L.H	KP9028052
53	51068-041-52	Bus Bar, R.H	KP9028053
54	51068-041-53	Bus Bar, L.H	KP9028054
55	51068-066-01	Bus Bar	KP9028055
56	50502-408-07	Spacer	KP9028056
57	51068-091-50	Bus Bar, R.H	KP9028057
58	51068-092-50	Bus Bar, L.H	KP9028058
59A	51068-085-50	Contact Shaft Assembly	KP9228059
60	51068-027-50	Trip Assembly	KP9028060
61	51068-028-01	Shaft	KP9028061
62	51068-029-01	Operating Arm	KP9028062
63	24209-32780	Pin	KP9028063
64	51068-030-01	Torsion Spring	KP9028064
65	FP-24H24	Bearing	KP9028065
66A	51068-086-50	Contact Shaft Assembly	KP9228066
67	51068-020-50	Connector Assembly	KP9228067
68	L-6056	Auxiliary Arm Pin	KP9028068
69	LT-3394	Set Screw	KP9028069
70A	51068-017-02	Shaft	KP9028070
71A	50512-251-25	Shaft Insulator	KP9028071
72	51068-018-50	Contact Arm Assembly	KP9028072
73	21401-28680	Cap Screw	KP9028073
74	51068-019-01	Contact Arm Clamp	KP9028074
76	50502-601-34	Contact Spring	KP9028075
77	21401-28660	Cap Screw	KP9028076
78	23003-00240	Jam Nut	KP9028077
79	51068-026-50	Rocker Arm Assembly	KP9028078
80	51068-025-01	Arc Horn	KP9028079
81	51068-021-01	Auxiliary Arm	KP9028080
82	21401-24240	H.I Cap Screw	KP7328076
83	51068-010-51	Rear Panel Assembly	KP9028082
84	51202-062-01	Gasket	KP9028083
85	23003-00200	Hex Jam Nut	KP9028084
86	22003-20241	Set Screw	KP9028085
87	51068-012-01	Bearing Housing	KP9028086
88	21402-29480	Cap Screw	KP8628065
89	FP-24H24	Bearing	KP9028065
90	21401-28400	Cap Screw	KP8628036
91	21401-28760	Cap Screw	KP9028090
92	FP-24H25	Bearing	KP9028091
93	50502-053-21	Bearing Spacer	KP9028092
94	51068-011-01	Front Bearing Housing	KP9028093
95A	51068-082-50	Frame Assembly	KP9028094
96	23602-13209	Washer	KP9028095
97	50502-276-31	Pivot Pin	KP9028096
98	24201-06320	Cotter Pin	KP7228067
99	24209-32480	Roll Pin	KP9028098
100	51068-013-50	Base Assembly	KP9028099
101	50502-407-22	Key	KP9028100
102	FP-24B35	Oilire Bearing	KP9028101
103	51068-031-01	LarchArm	KP9028102
104	50502-601-37	Larch Arm Spring	KP9028103
105	51068-045-01	Stop Plate	KP9028104
106A	51068-053-51	Weight Arm Assembly	KP9028105
107A	51068-059-51	Weight Arm Assembly	KP9028106
108A	51068-055-51	Suspended Weight Assembly	KP9028107
109	51068-056-50	Wire Rope & Fittings	KP9028108
110	50502-005-21	Washer	KP9228109
111	X-2319	CapScrew	KP7228026
112	X-2222	Special Cap Screw	KP7228027
113	51068-051	Side Cover Assembly	KP9028112