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| Type | Type 5SY4 |
| Breaker Type | Miniature Circuit Breakers |
| Number of Poles | 3 pole |
| Rated current | 20 A |
| Voltage | 230/400V AC |
| Frequency | 50-60 Hz |
| Mounting | 70 mm device mounting depth |
| Weight | 0.456 kg |
Miniature circuit breaker 400 V 10kA, 3-pole, C, 20 A, D=70 mm
Model
product brand name SENTRON
product designation Miniature circuit breaker
General technical data
number of poles 3
number of poles / note 3P
tripping characteristic class C
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 20 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
energy limitation class 3
Dissipation
power loss W / for rated value of the current / at AC
/ in hot operating state / per pole
1.7 W
suitability for operation Mechanical engineering / industry
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Reviews
- C
Colin Archipley
Sep 26, 2025
Siemens Circuit Breaker 5SY4320-7I discovered the piece I was looking for at an excellent cost.HelpfulUnhelpful - A
Albert Velasquez
Sep 11, 2025
Siemens Circuit Breaker 5SY4320-7It's a bit difficult to get a hold of someone on the phone.HelpfulUnhelpful - C
Chandler Hicks
Jun 11, 2025
Siemens Circuit Breaker 5SY4320-7Thanks for being so kind.HelpfulUnhelpful - W
Walter Haley
Feb 25, 2025
Siemens Circuit Breaker 5SY4320-7Exactly right!HelpfulUnhelpful - R
Ronald Fontaine
Dec 20, 2024
Siemens Circuit Breaker 5SY4320-7We're happy with the order, but some items were left behind in the box.HelpfulUnhelpful - D
Doug Landess
Sep 28, 2024
Siemens Circuit Breaker 5SY4320-7All good qualityHelpfulUnhelpful - A
Anonymous user
Nov 25, 2022
Siemens Circuit Breaker 5SY4320-7All was ok! No problems whatsoever.HelpfulUnhelpful
Siemens Circuit Breaker 5SY4320-7
✔ In Stock (Can ship in 5-7 days)

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