Miniature circuit breaker 230/400 V 10kA, 1-pole, B, 125 A, D=70 mm
Product Type: Industrial Automation Component
General
Model
| product brand name |
SENTRON |
| product designation |
Miniature circuit breaker |
General technical data
| number of poles |
1 |
| design of pole |
1P |
| tripping characteristic class |
B |
| mechanical service life (operating cycles) typical |
10 000 |
| overvoltage category |
3 |
| degree of pollution |
3 |
Voltage
| type of voltage of the operating voltage |
AC |
insulation voltage (Ui)
| ● at AC rated value |
440 V |
| ● with single-phase operation at AC rated value |
250 V |
| ● with multi-phase operation at AC rated value |
440 V |
● operational current
| — at 30 °C rated value |
125 A |
| — at 40 °C rated value |
115.625 A |
| — at 50 °C rated value |
106.25 A |
| — at 60 °C rated value |
96.25 A |
| ● operational current at AC rated value |
125 A |
Supply voltage
| supply voltage at AC |
400 V |
| value range of the supply voltage frequency |
50/60 Hz |
Protection class
| protection class IP |
IP20 with connected conductors, IP40 in the area of the handle with distribution cover |
switching capacity current
| ● according to EN 60898 rated value |
10 kA |
| energy limitation class |
3 |
Dissipation
| power loss [W] for rated value of the current at AC in hot operating state per pole |
10.9 W |
| suitability for operation |
Infrastructure / Industry |
Product details
| product feature touch protection |
Yes |
product component
| ● tunnel terminals top |
Yes |
| ● tunnel terminals bottom |
Yes |
| product feature properties for main switches in accordance with EN 60204-1 |
Yes |
| product feature halogen-free |
Yes |
| product feature sealable |
Yes |
| product feature silicon-free |
Yes |
| product extension installable supplementary devices |
Yes |
connectable conductor cross-section solid
| ● minimum |
25 mm² |
| ● maximum |
50 mm² |
connectable conductor cross-section stranded
| ● minimum |
25 mm² |
| ● maximum |
50 mm² |
connectable conductor cross-section finely stranded with core end processing
| ● minimum |
25 mm² |
| ● maximum |
35 mm² |
AWG number as coded connectable conductor cross section
tightening torque [lbf·in] with screw-type terminals
| ● minimum |
22.1 lbf·in |
| ● maximum |
31 lbf·in |
tightening torque with screw-type terminals
| ● minimum |
2.5 N·m |
| ● maximum |
3.5 N·m |
| position of power supply cord |
Any |
Mechanical Design
| height |
90 mm |
| width |
27 mm |
| depth |
76 mm |
| installation depth |
70 mm |
| number of modular width units |
1.5 |
| fastening method |
DIN rail |
| mounting position |
any |
| Net Weight |
271 g |
Environmental conditions
| influence of the surrounding temperature |
Max. 95% rel. humidity |
| shock resistance according to IEC 60068-2-27 |
150m/s² at 11ms half-sine |
| vibration resistance according to IEC 60068-2-6 |
50m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec) |
ambient temperature during storage
| ● minimum |
-40 °C |
| ● maximum |
75 °C |
Environment
| Environmental Confirmations |
Yes |
| Environmental Confirmations |
Yes |
| EPD Typ II/III (with life cylce assessment) |
Yes |
General Product Approval
| CEBEC |
Yes |
| CCC |
Yes |
| cURus |
Yes |
| UR |
Yes |
| VDE |
Yes |
| EAC |
Yes |
| EU declaration of conformity |
Yes |
| UK Declaration of Conformity |
Yes |
Maritime application
| DNV (Det Norske Veritas) |
Yes |
| LR (Lloyds Register) |
Yes |
other
| Chinese Quality Checkmark |
Yes |
| Confirmation |
Yes |
| Miscellaneous |
Yes |
Railway
Dangerous goods
| Transport Information |
Yes |
Characteristic curves
https://curves.simaris.siemens.com/curves/
| last modified: |
7/22/2025 |
| Date8/1/2026 |
Subject to change without notice© Copyright Siemens 2026 |
Applications
This Industrial Automation Component is designed for industrial automation applications, offering reliable performance and compatibility with Siemens automation systems. Suitable for manufacturing, process control, and building automation environments.
