High Voltage DC Miniature Circuit Breaker

The SYB5-40P High Voltage DC Miniature Circuit Breaker, supplied by the China-based manufacturer Zhejiang Soutya New Energy LLC, provides 1 500 V DC circuit protection.
Key Features
• High-voltage capability: single-pole 500 V DC, up to 1,500 V DC—fewer strings, lower cost.
• Non-polarized, bidirectional protection for faster, easier installation.
• Double-break contacts with extra-wide contact gap for superior safety.
• Ideal for DC combiner boxes in photovoltaic systems.

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Product Description

SGB5-40P High Voltage DC Miniature Circuit Breaker supplied by China manufacturer Zhejiang Soutya New Energy LLC,is a 1500 V DC, bidirectional and non-polarized miniature breaker with 1.5 kA breaking, ideal for PV, BESS and EV-charger protection.

Characteristic

micro-grids.
Non-polar,bidirectional protection;
Overload protection;
Short arc;
Short circuit protection;
High breaking capacity;

Certificates: CB ,CE, TUV , UKCA

Application scenarios

SGB5-40P high voltage DC miniature circuit breaker delivers space-saving, safe, bidirectional protection for 1 500 V DC renewable-energy systems—PV, storage, EV chargers and DC

1. PV DC combiner boxes

– 1500 V DC rating allows longer strings, cutting the number of combiner boxes; bidirectional protection handles reverse night-time currents.

2. Commercial / residential battery racks

– Non-polarized wiring simplifies paralleling or swapping battery modules; thermal-magnetic trip quickly isolates charge/discharge faults.

3. 150 kW+ DC fast-charging stations

– 18 mm-wide DIN-rail design fits compact charger cubicles; 1.5 kA breaking capacity secures the internal DC bus.

4. DC micro-grids & data-center DC distribution

– Protects 750 V / 1 000 V / 1 500 V DC branch circuits; B, C or D curves match various load profiles.

5. High-altitude or outdoor distributed PV

– Operates from −30 °C to +70 °C without derating up to 2 000 m altitude, suiting harsh environments.

Technical Parameter

Model		SGB5-40P
Pole		1P	2P	3P	4P
Rated Working Voltage Ue		500VDC	1000VDC	1500VDC	1500VDC

Maximum frame current		40A
Rated Current In		6A, 10A, 16A, 20A, 25A, 32A, 40A
Rated Insulation Voltage Ui		1000VDC		1500VDC
Rated impulse withstand voltage Uimp		8kV

Tripping characteristics		B/C/D
Tripping type		Thermal-magnetic
Operational Breaking Capacity Ics		1.5kA(DC)

Ultimate breaking capacity lcu		1.5kA(DC)
Electrical Life
Actual Average Value		Average 1000 times
Standard Specified Value		300Times
Mechanical Life
Actual Average Value		≥15000Times
Standard Specified Value		9700Times
Overvoltage category		Ⅲ
Pollution degree		3
Protection Level		IP40;Termina IP20
Moisture and heat resistance		Category2
Relative Humidity		≤95%
Vibration Resistance		According to IEC60068-2-6
Mechanical Impact Resistance Parameters		According to IEC60068-2-27

Wiring Capacity		2.5~35mm²
Wiring Torque		3.0Nm
Operating Ambient Temperature		-30℃~+70℃
Storage Ambient Temperature		-40℃~+85℃
Installation Method		DIN35
Altitude		≤2000m
Weight		0.13kg/Pole
Dimension	Length	108mm

	Width	18mm	36mm	54mm	72mm
	Height	Max 78mm
Package	Pcs/Box	12	6	4	3

	Box/Carton	10
	Carton/Pallet	80
Storage		The product should be stored in a well-ventilated warehouse, with relative humidity not exceeding 80%, and the ambient temperature should be between -40℃ and+80℃.Additionally, there should be no acidic, alkaline, or corrosive gases present.

Appearance and Installation Dimensions

High Voltage DC Miniature Circuit Breaker

DC Wiring Diagram

High Voltage DC Miniature Circuit Breaker

Derating Factor

Temperature Derating Factor Table

Temperature	-30℃	-25℃	-20℃	-15℃	-10℃	-5℃	0℃	5℃	10℃	15℃
Rated Operating Current Coefficient	1.279	1.261	0.242	1.223	0.204	1.182	1.161	1.143	1.127	1.103


Temperature	20℃	25℃	30℃	40℃	45℃	50℃	55°C	60℃	65°C	70℃
Rated Operating Current Coefficient	1.079	1.063	1.047	1	0.984	0.968	0.952	0.922	0.904	0.891

Altitude Derating Factor Table

Altitude /m	2000	3000	4000	5000
Rated working Current Coefficient	1	0.96	0.91	0.86
Rated working Voltage Coefficient	1	1	1	1
Rated Power Frequency Withstand Voltage Coefficient	1	0.9	0.82	0.71
Rated Impulse Withstand Voltage Coefficient	1	0.9	0.82	0.71
Rated Limit Short-circuit Segment Capacity and Electrical Life Coefficient	1	0.82	0.7	0.6
	1	0.82	0.7	0.6

Derating factor table for side-by-side installation of MCBS

No.of MCB	1	2~3	4~5	6~8	9~10
In≤25A Coefficient	1	0.96	0.9	0.8	0.7
32A≤In≤63A Coefficient	1	0.92	0.8	0.7	0.6

Accessory

MX auxiliary release device
Rated Control Voltage Us	DC:24~48V AC:110~230V
Maximum Tripping Time	<10ms
Coil Resistance	5Ω
Limit current	≥1.6A
Mechanical Life	10000times
Electrical Life	4000times
Wiring torque	0.8N ·m
Wiring capability	1.0mm²Hard wire
	1.0mm²Soft wire with terminal lugs
Operating Temperature Range	-30℃~+70℃


Environmental conditions	There should be no explosive hazardous substances, and no harmful gases or conductive dust that can corrode or damage insulation
Assembly position	To the left side of the circuit breaker

Installation conditions	DIN35mm standard rail mounting

Auxiliary contact OF
Contact breaking capacity	AC13:le=3A;Ue=250V
	AC15:le=2A;Ue=250V
	DC12:le=0.5A;Ue=110V
Minimum Operating Voltage	5V


Minimum Operating Current	10mA


Rated Insulation Voltage	500V
Rated limited short-circuit current Ik	1000A
Agreed heating current Ith	4A
Mechanical Life	10000times
Electrical Life	4000times
Wiring torque	0.8N ·m
Wiring capability	1.0mm²
Number of contacts	1 normally open, 1 normally closed

Operating Temperature Range	-30℃~+70℃
Environmental conditions	There should be no explosive hazardous substances, and no harmful gases or conductive dust that can corrode or damage insulation

Assembly position	To the left side of the circuit breaker

Installation conditions	DIN 35mm standard rail mounting

Zhejiang Soutya New Energy LLC

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Contact Info

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Address

East of No.148, Wei 12th Road, Economic Development Zone,Yanpan Subdistrict,Yueqing City,Wenzhou,Zhejiang Province,China
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Tel

+86-13757759651
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E-mail

sales@soutya.com

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