Siemens 5SM3745-0 Datenblatt

Data sheet

5SM3745-0

Residual current operated circuit breaker, 4-pole, type AC, In: 125 A, 500 mA, Un AC: 400 V

Model

product brand name	SENTRON
	RCCB
product designation
	Instantaneous
design of the product

General technical data

number of poles	4
	1
size of installation devices / acc. to DIN 43880
mechanical service life (switching cycles) / typical	10 000
	10 kA
short-circuit current rating
	No
switching function / short-term delayed
	III
overvoltage category

Supply voltage

operational current / at AC / rated value	125 A
● supply voltage / at AC / rated value	400 V
● supply voltage / for testing equipment /	195 V
minimum
	50 Hz
operating frequency
supply voltage frequency

5SM3745-0	12/08/2020	Subject to change without notice
Page 1/3		© Copyright Siemens

● rated value	50 Hz

Protection class

protection class IP	IP20, if the distribution board is installed, with connected
	conductors
Switching capacity

switching capacity current

●acc. to EN 60898 / rated value

●according to IEC 61008-1 / rated value

1.25 kA

1.25 kA

Dissipation

power loss [W]

●for rated value of the current / at AC / in hot operating state / per pole

●maximum

8.9 W

26.7 W

Current

tripping fault current / rated value

residual current type

surge current resistance / rated value

500 mA

AC

1 kA

Product details

product feature / silicon-free	Yes
	Yes
product extension / installable / supplementary
devices
Connections

connectable conductor cross-section / solid

●minimum

●maximum

connectable conductor cross-section / stranded

●minimum

●maximum

tightening torque / with screw-type terminals

●minimum

●maximum

position / of power supply cord

2.5 mm²

50 mm²

2.5 mm²

50 mm²

3 N·m

3.5 N·m

top or bottom

Mechanical Design

height

width

depth

installation depth

number of modular width units

fastening method

mounting position

90 mm

72 mm

77 mm

70 mm

4

DIN rail (REG)

any

5SM3745-0	12/08/2020	Subject to change without notice
Page 2/3		© Copyright Siemens