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| Type | Type 5SY4 |
| Breaker Type | Miniature Circuit Breakers |
| Number of Poles | 1 pole |
| Rated current | 8 A |
| Voltage | 230/400V AC |
| Frequency | 50-60 Hz |
| Mounting | 70 mm device mounting depth |
| Weight | 0.147 kg |
Miniature circuit breaker 230/400 V 10kA, 1-pole, A, 8A, D=70 mm
Model
product brand name SENTRON
product designation Miniature circuit breaker
General technical data
number of poles 1
number of poles / note 1P
tripping characteristic class A
mechanical service life (switching cycles) / typical 10 000
circuit-breaker / Design 5SY4
overvoltage category III
degree of pollution 3
Voltage
insulation voltage
with single-phase operation / at AC / rated
value
440 V
with multi-phase operation / at AC / rated value 440 V
supply voltage / with single-phase operation / at AC /
rated value
230 V
Supply voltage
type of voltage AC
operational current / at AC / rated value 8 A
supply voltage / at AC / rated value 400 V
operating voltage
at DC / rated value / maximum 72 V
supply voltage frequency
rated value 50/60 Hz
Protection class
protection class IP IP20, with connected conductors
Switching capacity
switching capacity current
at DC / acc. to IEC 60947-2 / rated value 15 kA
acc. to EN 60898 / rated value 10 kA
acc. to IEC 60947-2 / rated value 20 kA
Dissipation
power loss W / for rated value of the current / at AC
/ in hot operating state / per pole
1.9 W
Current
Tripping residual / rated value / derated current / at
40 Cel
7.62 A
suitability for operation Mechanical engineering / industry
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Reviews
- S
Samir Patel
Sep 06, 2025
Siemens Circuit Breaker 5SY4108-5Simple and easy to use - got my order done quickly.HelpfulUnhelpful - R
Roberta L Bostwick
Jun 09, 2025
Siemens Circuit Breaker 5SY4108-5Always expecting the best from people.HelpfulUnhelpful - D
Daniel Tupas Rosales
May 03, 2025
Siemens Circuit Breaker 5SY4108-5Ian was very accommodating, and I’m hopeful about developing a strong partnership moving forward.HelpfulUnhelpful - M
Melissa Gosselin
Apr 18, 2025
Siemens Circuit Breaker 5SY4108-5Great service and lightning-fast shipping.HelpfulUnhelpful - J
Janet Vejar
Nov 20, 2024
Siemens Circuit Breaker 5SY4108-5easy transactionHelpfulUnhelpful - C
Cassie Hoskinson
Oct 08, 2024
Siemens Circuit Breaker 5SY4108-5Great and lightning-fastHelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Siemens Circuit Breaker 5SY4108-5All was ok! No problems whatsoever.HelpfulUnhelpful
Siemens Circuit Breaker 5SY4108-5
✔ In Stock (Can ship in 5-7 days)

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