SF28 Metal Push-Pull Connector: Heavy-Duty 28mm IP67 Power Link

Name: SF28 Metal Push-Pull Connector: Heavy-Duty 28mm IP67 Power Link
Brand: STA Connector
Availability: InStock
Rating: 5 (1 reviews)

SF28 Metal Push-Pull Connectors from STA Connector are the most robust circular interconnects in our professional series, engineered for high-capacity power distribution and complex multi-signal integration. Featuring an extra-large 28mm shell and a certified IP67 waterproof rating, these connectors provide a hermetic seal against extreme environmental conditions, including heavy rain and dust. The precision push-pull self-latching system ensures a fail-safe, vibration-proof connection for heavy-duty industrial machinery, medical power systems, and outdoor infrastructure, making the SF28 the ultimate choice for engineers requiring maximum reliability and high-current stability.

Coupling Type

Push-Pull Self-Locking Mechanism

IP Rating

IP67 (Waterproof/Dustproof)

Material (Shell)

Brass (Chrome Plated)

Pin Configuration

3, 4, 7, 10, 12, 16, 18, 20, 24 Pins

Contact Material

Phosphor Bronze with Gold Plating

Temperature Range

-40°C ~ +85°C

Connector Type:

Straight Male Plug

Straight Female Plug

Mating Male Plug

Mating Female Plug

Front Mount Male Receptacle

Front Mount Female Receptacle

Square Flange Male Socket

Square Flange Female Socket

Pins:

2pin

3pin

4pin

5pin

6pin

7pin

8pin

9pin

10pin

12pin

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Description

Key Advantages

High-Density Multi-Core Versatility: Supporting an extensive range of configurations from 3 to 24 pins, the SF20 series allows for the consolidation of multiple power and data lines into a single, space-efficient waterproof interface.
Massive Current Carrying Capacity: Designed for heavy-duty electrical loads, the SF28 high-power version can handle substantial current, ensuring stable performance for industrial motor drives, large-scale medical imaging, and high-wattage power supplies.
Certified IP67 Submersible Protection: Equipped with industrial-grade O-rings, this waterproof circular connector offers total protection against liquid immersion and fine dust ingress, maintaining electrical integrity in harsh outdoor and wash-down environments.
Instant Self-Latching Security: Our metal push-pull locking mechanism provides an audible click upon engagement, preventing accidental disconnection from cable tension while allowing for rapid, one-handed mating in complex equipment arrays.
Ultimate EMI/RFI Shielding: The solid chrome-plated brass housing acts as a 360-degree Faraday cage, effectively neutralizing electromagnetic interference to ensure clean, high-speed data transmission even when located near high-voltage industrial equipment.

Connector drawings

Straight Male Plug	Straight Female Plug

Mating Male Receptacle	Mating Female Receptacle

Front Mount Male Receptacle	Front Mount Female Receptacle

Square Flange Male Socket	Square Flange Female Socket

Pins	3	4	5	7	10	12	16	18	20	24	26
Insulator Front View
Rated current(A)	50	25	25	25	25	10	10	10	5	5	5
Contact diameter(mm)	φ3.5×3	φ2.5×4	φ2.5×5	φ2.5×7	φ2.5×10	φ1.5×12	φ1.5×16	φ1.5×18	φ1.0×20	φ1.0×24	φ1.0×26
Operating voltage(AC.V)	500	500	500	500	500	500	500	500	400	400	400
Pressure resistance (AC.V) 1 min	1500	1500	1500	1500	1500	1500	1500	1500	1200	1200	1200
Contact resistance(mΩ)	0.5	1	1	1	1	2.5	2.5	2.5	5	5	5
Insulation resistance(mΩ)	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000

SF Series Metal Connector Video

Versatile Application Scenarios

Industrial Machinery: Main power and control links for CNC centers, heavy welding stations, and automated assembly robots.
Medical Power Distribution: Reliable interconnects for MRI scanners, surgical robotics, and high-capacity hospital power beds.
Aviation & Defense: Ground support equipment, communication trailers, and ruggedized internal wiring for aerospace control panels.
Energy & Infrastructure: Weatherproof connections for solar power inverters, wind turbine sensors, and outdoor telecommunication base stations.
Professional Broadcasting: High-capacity power feeds for large-scale outdoor LED displays and professional mobile television production vans.

FAQ

Q: Can the SF28 handle extreme vibration in industrial settings?
- A: Yes, the SF28 self-latching mechanism is specifically designed to remain securely locked under high-vibration conditions, ensuring constant electrical contact.
Q: What is the maximum current for the SF28 3-pin connector?
- A: The SF28 3-pin version is optimized for high-power delivery, supporting up to 50A depending on the specific wire gauge used during assembly.
Q: Is there an optional cable strain relief for large-diameter cables?
- A: Absolutely. STA Connector provides a variety of heavy-duty cable collets for the SF28 to ensure a perfect IP67 seal for various industrial cable thicknesses.