PV DC circuit breaker SOLARC SCB6DC-32

Q: SCB6DC-32 or SCB6DC-63: which one?

The SCB6DC-32 covers string ratings up to 32 A and reaches 1,000 V DC in just two poles. The SCB6DC-63 goes up to 63 A and 1,200 V in four poles, with a 10 kA breaking capacity: it is intended for combined circuits, batteries and the highest voltages.

Q: How do I choose the rating?

The rating depends on the short-circuit current of the string’s modules, the cable cross-section and the input current accepted by the inverter, as shown on their datasheets. This calculation is the installer’s responsibility.

UP TO 1,000 V DC IN TWO POLES, FOR PHOTOVOLTAIC STRINGS

Ratings: 6 to 32 A
Breaking Capacity: 6 kA
Maximum Voltage: 1,000 V DC
Standard: IEC 60947-2

1,000 V DC in two poles
Operating voltage of 500 V per pole: 500 V in 1P and 1,000 V in 2P. A two-pole unit is enough to break a 1,000 V photovoltaic string, where the SCB6DC-63 needs four poles.
Non-polarised
It can be wired in either direction, which removes the risk of reversed polarity during installation. It protects modules, inverters and batteries against overloads and short circuits.
String ratings, from 6 to 32 A
Seven ratings from 6 to 32 A, in B, C or D curve, 6 kA breaking capacity, 1,200 V DC insulation. IP40 on the sides, IP20 at the terminals, from -40 to +60 °C, on 35 mm DIN rail.

Documentation to download

Catalogue-SOLARC-Guide-de-selection-FR.pdf

*Product images may represent the product range, or be for illustration purposes only, and may not represent the product exactly.

Technical specifications

Electrical specifications
	SCB6DC-32
Number of poles	1P, 2P
Rated operating voltage	500 V (1P), 1,000 V (2P) DC
Frame rating	32 A
Ratings	6, 10, 13, 16, 20, 25, 32 A
Rated insulation voltage	1,200 V DC
Impulse withstand	6 kV
Service breaking capacity Ics	6 kA
Ultimate breaking capacity Icu	6 kA
Arc distance	50 mm
Tripping type	Thermal-magnetic
Tripping curves
Thermal tripping	No trip at 1.13 In (≥ 1 h), trip at 1.45 In (< 1 h)
B curve	Hold at 4 In, trip at 7 In (< 0.1 s)
C curve	Hold at 7 In, trip at 10 In (< 0.1 s)
D curve	Hold at 10 In, trip at 15 In (< 0.1 s)
Installation
Protection rating	IP40 on the sides, IP20 at the terminals
Conductor cross-section	2.5 to 25 mm²
Tightening torque	2 to 2.5 N·m
Operating and storage temperature	-40 to +60 °C
Damp heat resistance	Class 2
Mounting	35 mm DIN rail
Service life and standards
Mechanical endurance	20,000 operations
Electrical endurance	300 operations
Standards	IEC 60947-2, GB/T 14048.2
Compliance	CE, RoHS

Frequently asked questions

SCB6DC-32 or SCB6DC-63: which one?

The SCB6DC-32 covers string ratings up to 32 A and reaches 1,000 V DC in just two poles. The SCB6DC-63 goes up to 63 A and 1,200 V in four poles, with a 10 kA breaking capacity: it is intended for combined circuits, batteries and the highest voltages.

See the SCB6DC-63

How do I choose the rating?

The rating depends on the short-circuit current of the string’s modules, the cable cross-section and the input current accepted by the inverter, as shown on their datasheets. This calculation is the installer’s responsibility.

See the whole protection range