2. UL Approved Equipment
UL was established in 1894 by William Henry Merrill for the
testing of products' safety against fire and other dangers
related to electricity for the purposes of U.S. insurance
companies. The institute has since been testing materials,
apparatuses, products, equipment, buildings, systems, etc.,
concerning the danger to life and property under the auspices
of American Insurance Association. It is not directly related with
the association but is a completely independent
non-profit-making organization, which is known as the
world-oldest and greatest authority for safety testing.
To ensure the safety of life and property against fire, electric
shock or other dangers which may arise in using equipment,
UL assumes the following missions from the consumers' point
of view:
(1) To establish safety standards
(2) To test products based on those established standards
(3) To make the test results known to insurers,
government agencies, related organizations and
general consumers
UL executes tests for above purposes, approves the products
which clear applicable standards, and makes them known to
the public. There are two methods for indicating UL approval:
(1) Listing service
This is generally referred to as "listing" and is applied to the
products and parts which are manufactured so as to ensure
safety under any working conditions. Considering that they are
used by general consumers, comprehensive investigation and
testing are made as to their safety. When accepted, they are
given the "listing mark" and made known to the public by
means of the categorized products list (Green Book) which is
published by UL.
(2) Recognition service
This is applied mainly to the materials or parts which are
assembled in final products in manufacturers' factories. When
accepted, they are included in the registered parts list (Yellow
Book).
Table 1 Indication of UL approval
Publication method Indication of
UL approval Indication on
product
Publication by UL
Listing Listing mark
Categorized
products list
(Green Book)
White card
Recognition Recognition mark
Registered
parts list
(Yellow Book)
Yellow card
Table 2 Indication of UL⋅CSA approval
Indication of
UL⋅CSA approval
Indication on
product
Outline
Listing Listing mark
- Listing for USA and
Canada
- UL and CSA
certification by
testing
organization UL
Recognition Recognition mark
- Listing for USA and
Canada
- UL and CSA
certification by testing
organization UL
Contactors and Starters
z Standard magnetic contactors and starters (non-reversing, open type)
Magnetic
contactors
Magnetic starters Max. motor capacity [HP] Auxiliary contact
arrangement
Single-phase 3-phase squirrel-cage
Series
Standard
Type Type
110-
120V
220-
240V
200V 220-
240V
400-
480V
550-
600V
Continuous
current [A]
Standard On
request
UL File
No.
SC-03, 03Y SW-03/3H, 03Y/3H 1/3 1 2 2 5 5 11 1NO 1NC
SC-0, 0Y SW-0/3H, 0Y/3H 1/3 1 3 3 5 5 13 1NO 1NC
SC-05, 05Y SW-05/3H, 05Y/3H 1/3 1 3 3 5 5 13 1NO+1NC 2NO, 2NC
SC-4-0 SW-4-0/3H 1 2 5 5 7 1/2 7 1/2 20 1NO 1NC
SC-4-1 SW-4-1/3H 1 2 5 5 10 10 20 1NO 1NC
1NO+1NC 2NO, 2NC
NEW SC
Series
SC-5-1, 5-1Y SW-5-1/3H, 5-1Y/3H 1 2 5 5 10 10 20
- 2NO+2NC
SC-N1 SW-N1/3H 2 5 7 1/2 10 25 25 50 2NO+2NC 4NO+4NC
SC-N2 SW-N2/3H 3 7 1/2 10 15 30 30 60 2NO+2NC 4NO+4NC
SC-N2S SW-N2S/3H 3 10 15 20 40 40 80 2NO+2NC 4NO+4NC
SC-N3 SW-N3/3H 5 15 20 25 50 50 100 2NO+2NC 4NO+4NC
SC-N4 SW-N4/3H 7 1/2 15 25 30 60 60 135 2NO+2NC 4NO+4NC
SC-N5 SW-N5/3H 7 1/2 15 30 30 60 75 150 2NO+2NC 4NO+4NC
SC-N6 SW-N6/3H 10 20 40 40 75 100 150 2NO+2NC 4NO+4NC
SC-N7 SW-N7/3H 15 25 50 50 100 125 200 2NO+2NC 4NO+4NC
SC-N8 SW-N8/3H - - 60 60 150 150 260 2NO+2NC 4NO+4NC
SC-N10 SW-N10/3H - - 75 75 150 200 260 2NO+2NC 4NO+4NC
SC-N11 SW-N11/3H - - 100 100 200 250 350 2NO+2NC 4NO+4NC
SC-N12 SW-N12/3H - - 125 150 300 350 450 2NO+2NC 4NO+4NC
SC-N14 SW-N14/3H - - 200 200 500 600 660 2NO+2NC 4NO+4NC
NEO SC
Series
SC-N16 - - - 250 300 600 700 800 2NO+2NC 4NO+4NC
E42419
Note 1: Contactor ratings refer to the continuous current value.
11