Specifications

E
ELECTROSWITCH –
TESTING
All About Testing
Switches are tested in many ways to prove their capabilities and reliably. Electroswitch uses
a combination of test methods to provide meaningful data for all applications. These
include:
1. Cycle it mechanically until it breaks. This is usually an academic test since switches that
do not switch electric power are not needed. An exception is a setup switch whereby the
switch sets up a complicated circuit and then a circuit breaker switches the power. All testing
is done under electrical load.
2. Test under an application oriented specification–something that simulates actual operat-
ing conditions such as environment, overloads, surges, etc. UL1054 on SPECIAL USE
SWITCHES and CSA C22.2 on INDUSTRIAL CONTROL EQUIPMENT for use in Ordinary
(non-hazardous) Locations are probably the best specifications in widespread use. The
Series 21, 24, 25, 28 and 31 are UL recognized and CSA certified to these specifications.
3. Test at different ratings until destruction to determine ultimate life (destruction could be
mechanical failure, shorting out, dielectric failure, excessive heat rise, etc.). The test condi-
tions are outlined on the SELECTOR CHART on page 73. The results are summarized below:
Both UL and CSA testing consists of two parts:
1. Product testing to the specifications.
2. Follow-up service by UL and CSA personnel at the factory, including inspection and testing
to insure that the quality and reliability is maintained.
If all conditions are met, the switches are considered “certified electrical equipment” by
CSA and “recognized components” by UL and the applications are subject to review by
these agencies to assure suitability.
Series
24
31
101
20
W-2
UL Recognized
20A - 120VAC
15A - 240V
AC
6A - 600VAC
3A - 125VDC
1A - 250VDC
10A - 125VAC
5A - 250VAC
3A - 600VAC
5A - 30VDC
1A - 125VDC
15A-120VDC
10A-240VAC
7.5A-600VAC
10A-125VDC
5A-250VDC
.5HP-120/240VAC
CKT 1,2,3
20A - 600VAC
2.5 - 125VDC
5A/125VDC
20A/240VAC
1A/250VDC
8A/600VAC
CSA Certified
10A - 125VAC
10A - 125V
AC
5A - 250VAC
15A-120VDC
10A-240VAC
5A-480VAC
3A-600VAC
10A-125VDC
5A-250VDC
.5HP-120.240VAC
20A - 600VAC
14 HP - 600VAC
UL and CSA Ratings
These recognized or certified ratings are not necessarily the limits of switch capacity. They
represent the acceptable tested ratings to comply with individual standards.
Tests include:
1. Overload – 50 cycles of operation.
UL – 0-10A at 150% rating ... over 10A at 125% rating
CSA– 150% rating
2. Endurance–6000 operations(DC resistive; AC at .75 to .80 pf)
3. Temperature rise of contacts 30˚max. at maximum
continuous current rating
4. Dielectric Voltage Withstand UL-2200V rms
5. Spacings (between live parts or live parts to ground)
UL–0-250V (
3
⁄64 in. min.) 251-600V (
1
⁄8 in. min.)
CSA
51-150V
151-300V
301-600V
THROUGH AIR
.12"
.25"
.37"
OVER SURFACES
.25"
.37"
.50"
Electroswitch • 180 King Avenue • Weymouth, MA 02188 • TEL: [phone] • FAX: [phone] • www.electroswitch.com
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