C Series (CA, CM, CDA, CDM)
2 to 40 Amp Commercial Thermal Circuit Breaker
FEATURES
• 30VDC or 120VAC, 2 to 40 Amps
• Open and closed construction
• Automatic and manual reset options
• Ignition protected SAE J1171
• Weatherproof SAE J553
• UL Recognized E36869
ORDERING INFORMATION
X−X−X
Configuration
CA = Auto, open unit
CM = Manual, open unit
CDA = Auto, sealed unit
CDM = Manual, sealed unit
Amp Rating
(2, 3, 4, 5, 6, 8, 10, 12.5, 15
17.5, 20, 25, 30, 35, 40)
Mounting Nuts
= leave blank for none
I
= optional mounting nuts
DESCRIPTION
The KLIXON® C series thermal breakers are designed to protect wiring
and meet the harshest environmental requirements. The C series
closed construction circuit breakers are weatherproof sealed for
protection against moisture, dust, grease, fuel vapors and other harsh
environments. The C series breakers are compact, lightweight and
designed to interrupt short circuits or overloads, and combine trip-free
protection with fast response time. Typical applications are protection
of wire cable of accessory circuits, equipment and battery protection
in construction and off-road equipment, marine, recreational vehicles
(RV’s), mining, agricultural equipment and electric (hybrid) vehicles.
PERFORMANCE CHARACTERISTICS
Calibration : 200% rated
current, 77°F (25°C)
Ultimate Trip at
77°F (25°C)
Endurance
Interrupt Current Capacity
Vibration
Salt Spray
Dielectric Strength
Insulation Resistance
Weight (with mounting
nuts)
2 to 10 amps : 20 to 150 seconds
12.5 to 40 amps : 5 to 55 seconds
Must hold 100%, Must trip 135%
Per SAE J553
Per SAE J553 and ABYC E-11
10G MIL-STD-202 Method 204, Condition A
MIL-STD-202 Method 101D (sealed only)
MIL-STD-202 Method 301, 1500VAC min
MIL-STD-202 Method 302, Condition B, 100 MΩ min
CDM: 48 grams max
CM : 37 grams max
CDA: 41 grams max
CA : 32 grams max
5
C Series (CA, CM, CDA, CDM)
TRIP CURVE - Approximate Time, Current Characteristics At 77°F (25°C)
Current in % Rated Load
1000
500
100
.10
1
10
100
1000
10,000
Trip Time in Seconds
Dotted Lines: 10 amps or below
Solid Lines:
Above
10 amps
DIMENSIONS
INCHES [MM]
2.0 [ 50.8]
(DOES NOT INCLUDE SEALING GASKET)
DERATING CURVE
160˚F
71˚C
Ambient Temperature in °F °C
,
140˚F
100˚F
70˚F
32˚F
0˚F
-40˚F
-60˚F
40
60
3
4
60˚C
38˚C
1
2
77°F 25°C
21˚C
,
0˚C
-18˚C
-40˚C
-51˚C
180
1.586 [40.28]
1.562 [39.67]
1.221 [31.01]
1.159 [29.44]
80
100
120
140
160
.562 [ 14.27]
MIN. PANEL HOLE DIA.
.430 [10.92]
.380 [9.65]
Ultimate Trip in % Rated Load
1.145 [29.08]
OPTIONAL #8-32 UNC-2B
MOUNTING NUT
(2 PLACES)
.250 [6.35] LONG
#8-32 UNC-2A ROUND
HEAD SCREW (2 PLACES)
Performance characteristics are based on room
temperature (77°F, 25°C). Consult derating curve for
ambient temperatures significantly higher or lower
than standard room temperature.
Example:
At 77°F (25°C) the device is calibrated to
hold at 100% of rated current (1) and trip at 135% of
rated current (2). At 140°F (60°C), the same device will
hold at approximately 78% of rated current (3), and trip
at approximately 115% of rated current (4).
.047 [1.19] REF. THK.
LOCKWASHER (2 PLACES)
.641 [16.28]
3
.906 [23.01]
3
1
.312 [7.93]
2
1
EYELET FOR
#10 SCREW
(2 PLACES)
BOTTOM VIEW
2 AMP THRU 10 AMP
BOTTOM VIEW
12½ AMP THRU 40 AMP
2
R
www.sensata.com
6
BUSINESS CENTER
http://www.sensata.com/
Sensata Technologies Inc.
529 Pleasant Street
Attleboro, MA 02703, USA
Phone: +1 508-236-3800
Fax: +1 508-236-2349
©2013 Sensata Technologies, Inc. All rights reserved worldwide. Printed in USA, revised April 2013.
Important Notice: Sensata Technologies reserves the right to make changes to, or to discontinue, any product or service
identified in this publication without notice. Before placing orders, users should obtain the latest version of the relevant
information to verify that the information being relied upon is current.
Sensata Technologies assumes no responsibility for customers’ product designs or applications. Users must determine the
suitability of the Sensata device described in this publication for their application, including the level of reliability required.
Many factors beyond Sensata’s control can affect the use and performance of a Sensata product in a particular application,
including the conditions under which the product is used and the time and environmental conditions in which the product
is expected to perform. As these factors are uniquely within the user’s knowledge and control, it is essential that the user
evaluate the Sensata product to determine whether it is fit for a particular purpose and suitable for the user’s application.
Sensata Technologies products are sold subject to Sensata’s Terms and Conditions of Sale which can be found at:
www.sensata.com/terms.htm
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