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SB SERIES — Heavy Duty DC Power Connectors (SB50A / SB75A / SB120A / SB175A / SB350A)

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Product Detail

SB Series Heavy-Duty Power Connectors are rugged, genderless two-pole interconnects designed for high-current DC and AC power distribution. The housing and silver-plated copper contacts deliver low-resistance, long-cycle performance in battery systems, material-handling equipment, renewable energy storage, EVs/AGVs, and industrial power panels.

Each connector is genderless — two housings of the same size and color mate directly by rotating one 180°, eliminating male/female inventory headaches. Mechanical keying by color prevents mismating between different voltage circuits (e.g. 12V / 24V / 48V).

Model	Continuous Rating*	Voltage Rating	Wire Range (AWG)	Wire Range (mm²)	Housing Material	Contact Material	Color Options
SB50A	50A	up to 600V AC/DC	#16 – #6	1.5 – 13.3	PC, UL94 V-0	Cu / Ag-plated	Gray / Red / Blue / Yellow / Green / Black
SB75A	75A	up to 600V AC/DC	#8 – #4	8.4 – 21.2	PC, UL94 V-0	Cu / Ag-plated	Gray / Red / Blue / Black
SB120A	120A	up to 600V AC/DC	#10 – #1	5.3 – 42.4	PC, UL94 V-0	Cu / Ag-plated	Gray / Red / Blue / Black
SB175A	175A	up to 600V AC/DC	#12 – 1/0	3.3 – 53.5	PC, UL94 V-0	Cu / Ag-plated	Gray / Red / Orange / Black
SB350A	350A	up to 600V AC/DC	1/0 – 4/0 (to 300 MCM)	53.5 – 152	PC, UL94 V-0	Cu / Ag-plated	Gray / Red / Black

Parameter	Value
Poles	2 (single circuit, dual-contact)
Voltage Rating	600 V max (AC or DC)
Contact Resistance	≤ 0.5 mΩ typical
Insulation Resistance	≥ 500 MΩ
Dielectric Withstanding Voltage	2200 V DC / AC
Housing	Polycarbonate (PC), flame rating UL 94 V-0
Contacts	Copper alloy, silver-plated (tin-plated on request)
Retaining Spring	Stainless steel (304 / 65Mn depending on batch)
Operating Temp.	-20 °C to +105 °C (standard) / CR option -40 °C
Mating Cycles	Up to 10,000 cycles (no-load)
Hot-Plug Capable	Yes — UL-rated for hot-plugging (within rated amp limits)
IP Rating	IP20 bare / IP64 with environmental boot
Mounting	Inline (default); panel-mount flange available
Compliance	RoHS / REACH on request; materials UL 94 V-0

APPLICATIONS

Forklift / pallet jack battery change-out systems
RV, campervan & off-grid 12V / 24V / 48V power links
Solar PV → charge controller / battery → inverter runs
EV / AGV auxiliary power & charging ports
Telecom / UPS battery cabinet interconnects
Marine DC busbars & winch power drops
Welding equipment & portable generator tie-ins

COLOR-KEYING GUIDE

Housing Color	Typical Voltage ID*
Red	24V
Yellow	12V
Blue	48V
Gray	Universal / Neutral
Green	72V / Special
Orange	18V / Special

We Also make SB connectors assembly with our wire, if you have any customs requirements please contact us directly

SB SERIES — Heavy Duty DC Power Connectors (SB50A / SB75A / SB120A / SB175A / SB350A)

SB Series DC Power Connectors (SB50A to SB350A) A complete range of high-current, genderless interconnects designed for 12V–600V systems. Rated from 50A to 350A, these connectors utilize silver-plated copper contacts housed in UL94 V-0 flame-retardant polycarbonate shells. The color-coding system prevents mismating between different voltages. Ideal for forklifts, solar storage, EVs, and telecom backup power.

MOQ：

100

WhatsApp:

+86 13430549499

Email:

carolyn@runqicable.com

Online Inquiry