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Copyright © 2018 Sensata Technologies, Inc.
| MA10
THERMAL CUT-OUT
Introduction
For 30 years Sensata Technologies’ MA10 temperature cutout has provided reliable protection in a variety of small domestic and personal care
appliances. The MA10 has set the world standard in the eld of open type temperature cutouts.
Sensata Technologies has been a leading global supplier of pressure sensors & switches for over 90 years.
Applications
Design and Operating Principles
The MA10 is a temperature-sensitive safety cut-out for applications like:
· Electric room heaters · Hair dryers
· Hand dryers · Hair curlers
Due to its compact design, the MA10 can be mounted easily and with its wide range of operating temperatures and tolerances it provides cost-effective
and reliable protection.
The Klixon® bimetal disc with welded-on contact is the heart of the
MA10. It is welded on the upper terminal which is riveted to the plastic
base. The lower terminal carries the stationary contact and is also
riveted to the phenolic base.
The operating principle of the MA10 is both simple and effective.
Its open structure allows optimum thermal response. When a fault
condition occurs, the increased ambient temperature causes the Klixon®
bimetal disc to snap open the contacts. As the device cools down to
a safe temperature again, the contacts will automatically reset. The
MA10 is available with a wide range of calibrated pre-set operating
temperatures (with varying tolerances). Since the current ows through
the bimetal disc, changing the bimetal resistivity makes it possible to
vary the product’s current sensitivity. A high, middle and low current-
sensitive bimetal disc is available at no additional charge.
DESIGN SPECIFICATIONS
Standard Operating Temperature Range From 60°C - 150°C
Tolerance on Open Temperature ± 5K/±7.5K/± 10K/± 15K
Max. Ambient Temperature 150°C
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Curves
Declarations
Declarations to EN60730-2-9
Purpose of the Control Thermal Cut-Out
Construction Incorporated, non-electronic
Degree of Protection IP00
Terminals for Ext. Conductors For internal conductors only
Temperature Limits of the
Switchhead 150°C
PTI of Insulation Materials PTI 250
Method of Mounting By various means in conjunction with (holes in) terminals, such that adequate creepage and clearance
distances are maintained between live parts and accessible metal parts
Operating Time For continuous operation
Type of Action Type 2C
Reset Characteristic Automatic
Extent of Sensing Element Whole control
Control Pollution Degree Degree 2
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All dimensions are in millimeters [inches].
DIMENSIONS
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Copyright © 2018 Sensata Technologies, Inc.
ORDERING OPTIONS
Example : MA10AA-031-1
Product Series
Terminal Conguration
Opening Temp. Tolerance
Standard Operating Temp.
AA = Both Terminals Straight
: ±15K
3: ±10K
2: ±7.5K
1: ±5K
See Chart Below.
MA10 AA 1031
MA10, Both Terminals Straight, Standard Opening Temp of 95°C with a low resistivity bimetal
disc (F30), Opening Temp. Tolerance ±5K
Standard Operating Temperature
Operating Temp
(°C)
Low Resistivity Bimetal
Disc (F30)
Medium Resistivity Bimetal
Disc (B1)
High Resistivity Bimetal
Disc (P850)
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
056
096
071
051
091
061
021
031
026
016
036
041
001
081
011
006
066
076
046
060
100
075
055
095
065
025
035
030
020
040
045
005
085
015
010
070
080
050
058
098
073
053
093
063
023
033
028
018
038
043
003
083
013
008
068
078
048
110
125
140
160
180
210
240
039
040
041
042
043
044
045
Americas
+1 (508) 236 2551
sensors@sensata.com
Europe, Middle East & Africa
+31 (74) 357 8156
info-sse@list.sensata.com
Asia Pacic
sales.isasia@list.sensata.com
China +86 (21) 2306 1500
Japan +81 (45) 277 7117
Korea +82 (31) 601 2004
India +91 (80) 67920890
Rest of Asia +886 (2) 27602006
ext 2808
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Rev:05/10/18 www.sensata.com
CONTACT US
Sensata Technologies, Inc. (“Sensata”) data sheets are solely intended to assist designers (“Buyers”) who are developing systems that
incorporate Sensata products (also referred to herein as “components”). Buyer understands and agrees that Buyer remains responsible
for using its independent analysis, evaluation and judgment in designing Buyer’s systems and products. Sensata data sheets have
been created using standard laboratory conditions and engineering practices. Sensata has not conducted any testing other than that
specically described in the published documentation for a particular data sheet. Sensata may make corrections, enhancements,
improvements and other changes to its data sheets or components without notice.
Buyers are authorized to use Sensata data sheets with the Sensata component(s) identied in each particular data sheet. HOWEVER, NO
OTHER LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE TO ANY OTHER SENSATA INTELLECTUAL PROPERTY RIGHT, AND
NO LICENSE TO ANY THIRD PARTY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT, IS GRANTED HEREIN. SENSATA DATA SHEETS
ARE PROVIDED “AS IS”. SENSATA MAKES NO WARRANTIES OR REPRESENTATIONS WITH REGARD TO THE DATA SHEETS OR USE
OF THE DATA SHEETS, EXPRESS, IMPLIED OR STATUTORY, INCLUDING ACCURACY OR COMPLETENESS. SENSATA DISCLAIMS
ANY WARRANTY OF TITLE AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
ENJOYMENT, QUIET POSSESSION, AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS WITH REGARD
TO SENSATA DATA SHEETS OR USE THEREOF.
All products are sold subject to Sensata’s terms and conditions of sale supplied at www.sensata.com SENSATA ASSUMES NO
LIABILITY FOR APPLICATIONS ASSISTANCE OR THE DESIGN OF BUYERS’ PRODUCTS. BUYER ACKNOWLEDGES AND AGREES THAT IT
IS SOLELY RESPONSIBLE FOR COMPLIANCE WITH ALL LEGAL, REGULATORY AND SAFETY-RELATED REQUIREMENTS CONCERNING
ITS PRODUCTS, AND ANY USE OF SENSATA COMPONENTS IN ITS APPLICATIONS, NOTWITHSTANDING ANY APPLICATIONS-RELATED
INFORMATION OR SUPPORT THAT MAY BE PROVIDED BY SENSATA.
Mailing Address: Sensata Technologies, Inc., 529 Pleasant Street, Attleboro, MA 02703, USA.
Copyright © 2018 Sensata Technologies, Inc.
Agency File/Report Number Standard
Rating
A-res (A-ind. @
PF=0.6)V / cycles)
ENEC 2014531.12 EN60730-2-9
Thermal Cut-Out 12(0) 250 / 10.000
UL / C-UL E54813 UL873 9(0.5) 250 / 10.000
18(0.75) 125 / 6.000
AGENCY APPROVALS AND CERTIFICATIONS
WARNINGS
RISK OF MATERIAL DAMAGE AND HOT ENCLOSURE
• The product’s side panels may be hot, allow the product to cool before touching
• Follow proper mounting instructions including torque values
• Do not allow liquids or foreign objects to enter this product
Failure to follow these instructions can result in serious injury, or equipment damage.
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Disconnect all power before installing or working with this equipment
• Verify all connections and replace all covers before turning on power
Failure to follow these instructions will result in death or serious injury