Thermal-magnetic (TM and AS-line)
https://www.schurter.com /PG17_20
TM12-221
Circuit Breaker for Equipment thermal-magnetic, Threaded neck type, Manual ON/OFF, Quick connect ter-
minals
See below:
Approvals and Compliances
Description
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Threaded neck type
Thermal-magnetic circuit breaker
1-pole
Manual ON/OFF type
Insensitive to shock or vibration
Quick connect terminals 6.3 x 0.8 mm
Compact design
Positively trip-free release
Available with cover
Different mounting possibilities
Applications
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Power supplies
Uninterruptible power supply
Power tools
Household appliances
Weblinks
Unique Selling Proposition
pdf datasheet, html-datasheet, General Product Information, Distributor-
Stock-Check, Detailed request for product, Product News
Technical Data
Rated Voltage AC
Rated Voltage DC
Rated current range AC
Conditional short circuit ca-
pacity
Short circuit capacity Icn
␣
Degree of Protection
Dielectric Strength
Insulation Resistance
Endurance typical
Endurance minimum
240 V: 50/60 Hz
28 V
0.05 - 15 A , see approbations
IEC: Inc, PC1, AC 240 V: 1 kA
AC 240 V : 200 A
AC/DC 28 V : 400 A
from front side IP 40 acc. to IEC 60529
50 Hz: > 1.5 kV
Impulse 1.2/50
μs:
> 2.5 kV
500 VDC > 100 MΩ
2 x Ir: 5000 switching cycles
Manual ON/OFF type
AC : 2 x Ir , cos
φ
0.6 :
DC : 2 x Ir , L/R = 2 - 3 ms :
5000 switching cycles
Overload
␣
Allowable Operation Temp.
Vibration Resistance
IEC: min. 40 trips
@ 6 x Ir, cos
φ
0.6
UL / CSA: min. 50 trips
@ 1.5 x Ir, cos
φ
0.75
-5 °C to 60 °C
± 1.5 mm @ 10 - 60 Hz
acc. to IEC 60068-2-6, test Fc
10 G @ 60 - 500 Hz
acc. to IEC 60068-2-6, test Fc
100 G / 6 ms
acc. to IEC 60068-2-27, test Ea
Thermal-Magnetic
Manual ON/OFF
ca. 10 g
Shock Resistance
Tripping Type
Actuation Type
Weight
Approvals and Compliances
Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in
Details about
Approvals
Circuit Breakers
1
TM12-221
Typical internal resistance TMF12
Rated Current [A]
0.05
0.50
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
11.00
12.00
13.00
14.00
15.00
16.00
Internal Resistance [Ω]
335.00
4.37
1.23
0.369
0.181
0.097
0.055
0.044
0.0231
0.0227
0.0142
0.0123
0.012
0.012
0.0108
0.0091
0.0089
0.0071
Thermal-magnetic (TM and AS-line)
https://www.schurter.com /PG17_20
Effect of ambient temperature
The units are calibrated for an ambient temperature of +23°C. To determine the rated cur-
rent for a lower or higher ambient temperature, use a correction factor (typical value) from
the table below:
Ambient Temperature [°C]
-5
0
10
23
30
40
50
60
Correction factor
0.87
0.90
0.95
1.00
1.05
1.12
1.20
1.30
Example: Rated current = 5 A, Environmental temperature = 50 °C, --> Correction factor =
1.2, Resulting current = 6.0 A
4
Circuit Breakers
Thermal-magnetic (TM and AS-line)
https://www.schurter.com /PG17_20
TM12-221
Time-Current-Curves
[ min ] [ sec
]
10'000
60
30
20
10
5
1
100
1'000
< 7,0 A
> 7,0 A
10
Time in Seconds
1
TMF
TMT
0,1
0,01
0,001
0,0001
1,05 1,32 2
4 5
8 10
20
50
Multiple of Rated Current In
Reference Temperature +23°
Config. Code
The characters are placeholders for the correspondingly keys of selections from the key tables.
Variants
Rated current
Auxiliary contact
0.3 A
1.2 A
1.2 A
2.0 A
2.5 A
3.5 A
4.0 A
10.0 A
16.0 A
l
l
Construction variants
Shunt terminal
Setting indication
Config. Code
Order Number
TMF12-221-0.3
TMF12-221-1.2
TMT12-221-1.2
TMF12-221-2
TMT12-221S-2.5
TMF12-221S-3.5
l
TMF12-221R-4
TMT12-221-10
TMT12-221-16
4410.0437
4410.0157
4410.0003
4410.0166
4410.0087
4410.0397
4410.0625
4410.0024
4410.0142
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Check-SCHURTER
Packaging Unit
20 Pcs
Circuit Breakers
5
Microchip MCU
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