RS PRO Industrial Circular Connectors, 4, 4 Contacts, Cable, In-Line, SY21 Connector, Plug and Socket, Male and Female

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Subtotal (1 set)*

£19.68

(exc. VAT)

£23.62

(inc. VAT)

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Temporarily out of stock
  • 18 unit(s) shipping from 15 October 2025
  • Plus 20 unit(s) shipping from 11 December 2025
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Set(s)
Per Set
1 - 9£19.68
10 +£18.11

*price indicative

RS Stock No.:
304-457
Brand:
RS PRO
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Brand

RS PRO

Number of Contacts

4, 4

Mounting Type

Cable, In-Line

Connector Size

SY21

Plug/Socket

Plug, Socket

Contact Gender

Female, Male

Termination Method

Solder

IP Rating

IP68

Current Rating

30A

Body Orientation

Straight

Voltage Rating

500V ac

Mating Type

Bayonet

Shell Size

21mm

Housing Material

Nylon 66, PC

Pole Format

4P

Shielded/Unshielded

Unshielded

Strain Relief

No

Contact Plating

Gold

Maximum Operating Temperature

85°C

Outer Diameter

29.4, 29mm

Contact Material

Brass

Minimum Operating Temperature

-40°C

COO (Country of Origin):
CN

RS PRO Industrial Circular Connector, 4 Contacts, 500 V ac, Bayonet Coupling


This RS PRO Industrial Circular Connector is designed for robust applications requiring high water resistance. With an IP67 rating, it is ideal for environments where moisture protection is critical. The bayonet coupling ensures secure and reliable connections, making it suitable for demanding industrial settings.

Features and Benefits


IP67 waterproof connector: Provides excellent protection against dust and water ingress, ensuring durability in harsh environments

Bayonet coupling: Offers a secure and quick connection, reducing installation time and enhancing reliability

Nylon 66 and Polycarbonate housing: Delivers strength and resistance to impact, ensuring long-term performance

Gold contact plating: Enhances conductivity and reduces corrosion, improving electrical performance

Wide operating temperature range (-40 °C to 85 °C): Suitable for use in extreme temperature conditions

Applications


Industrial machinery
Outdoor equipment
Automotive systems
Marine applications

Additional Information


Meets IP68 standards for waterproofing
Compatible with both plug and socket configurations
Supports cable mount and in-line mount options
Solder termination method for secure connections
Unshielded design for applications where shielding is not required

Why RS PRO?


RS PRO is the own brand of RS, offering professional quality products and solutions across all industries and technologies. Our product range is rigorously tested, inspected, and audited against demanding international standards to provide you with industrial-grade quality, at the right price. Making RS PRO your smart choice.

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