MCBs from the Siemens SENTRON portfolio meet the enhanced requirements of automated buildings and industrial power supply systems, e.g. in the automotive and semiconductor industry or in data centers. Compared to residential and functional buildings, these are usually more extensive and complex in terms of both network topology and operation. Electricity and production downtimes must be deliberately prevented in these cases using coordinated device combinations if economic losses are to be avoided. Our MCBs protect wires and cables in cases of short circuit and overloads, and also enable backup protection for switching devices and also semiconductor protection. They are therefore a fundamental component in end-to-end protection concepts for industry and infrastructure.
The right combination
The main purpose of Siemens circuit breakers is to permanently monitor and secure cables and wires in electrical systems. They also help protect humans against electric shocks when used in combination with RCCBs or as combined RCBO. Siemens Breakers combining the 5SY MCB with the 5SM6 arc-fault detection unit (AFDD) further expands the range of functions. An overview of breakers siemens all the combinations is provided below.
5SJ42038HG42
Siemens 5SJ4203-8HG42, Circuit breaker 10kA, 2-pole, D, 3 A according to UL 489-480Y/277V
Model
product brand name
SENTRON
product designation
Miniature circuit breakers
design of the product
Miniature circuit-breaker 5SJ4
General technical data
number of poles
2
tripping characteristic class
D
mechanical service life (switching cycles) / typical
10 000
installation environment regarding EMC
Suitable for environment B (immunity to interference not applicable)
reference code / acc. to DIN 40719 extended according to IEC 204-2 / acc. to IEC 750
F
overvoltage category
3
degree of pollution
3
Voltage
type of voltage / of the operating voltage
AC/DC
insulation voltage (Ui) / at AC / rated value
440 V
Supply voltage
supply voltage / at AC / rated value
400 V
operating voltage
● at AC / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum
277 V
● at DC / rated value / maximum
60 V
● at DC / single channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum
60 V
● at DC / 2-channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum
125 V
Protection class
protection class IP
IP20, with connected conductors, IP 40 in the handle range
Switching capacity
switching capacity current
● acc. to EN 60898 / rated value
10 kA
● acc. to IEC 60947-2 / rated value
15 kA
Dissipation
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole
1.8 W
Current
operational current
● at 30 °C / rated value
3 A
● at 40 °C / rated value
3 A
● at 45 °C / rated value
2.9 A
● at 50 °C / rated value
2.8 A
● at 55 °C / rated value
2.7 A
● at 60 °C / rated value
2.6 A
● at AC / rated value
3 A
Main circuit
type of voltage supply / at AC / acc. to UL 489 and CSA C22.2 No. 5-02
Reviews
There are no reviews yet.