Siemens 5SY43166 Circuit Breaker 16A 230/400V cable/line protection

The Siemens 5SY43166 circuit breaker, rated at 16 A, is designed to operate at voltages of 230 V and 400 V. This breaker is typically used for protecting electrical circuits from overload or short circuits. Ideal for residential and light commercial applications, it ensures reliable and safe electricity distribution.

Type	Circuit breaker
Current Rating	16A
Voltage Rating - AC	400V AC
Tripping Characteristics	B Curve
Additional equipment possible	TRUE
Ambient temperature during operating	-40 - 70°C
Built-in depth	70mm
Compatible with (details)	SENTRON
Concurrently switching neutral conductor	FALSE
Connectable conductor cross section multi-wired	0.75 - 35mm²
Connectable conductor cross section solid-core	0.75 - 35mm²
Current limiting class	3
Current Ratng	16A
Degree of protection (IP)	IP20
Depth	76mm
Dim	(W x H x D) 54 x 90 x 76 mm
Explosion-proof	false
Factory colour	Grey
Flush-mounted installation	false
Frequency	50-60MHz
Height	90mm
Number of Pins	3
Number of poles (total)	3
Number of protected poles	3
Overvoltage category	3
Pollution degree	3
Power loss	N/A
Rated current	16A
Rated impulse withstand voltage Uimp	4
Rated insulation voltage Ui	440V
Rated short-circuit breaking capacity Icn according to EN 60898 at 230 V	10kA
Rated short-circuit breaking capacity Icn according to EN 60898 at 400 V	10kA
Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 230 V	20kA
Rated short-circuit breaking capacity Icu according to IEC 60947-2 at 400 V	20kA
Rated voltage	400V
Switch-off Capacity	5kA
Voltage Rating	400V
Voltage type	AC
Width	54mm
Width in number of modular spacings	3