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
  • 10 unit(s) shipping from 18 December 2025
  • Plus 20 unit(s) shipping from 15 January 2026
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Set(s)
Per Set
1 - 9£19.68
10 +£18.11

*price indicative

RS Stock No.:
304-458
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

Screw

IP Rating

IP68

Current Rating

10A

Body Orientation

Straight

Voltage Rating

500V ac

Mating Type

Bayonet

Shell Size

21mm

Housing Material

Nylon 66, PC

Pole Format

4P

Contact Plating

Gold

Strain Relief

No

Shielded/Unshielded

Unshielded

Contact Material

Brass

Outer Diameter

29.4, 29mm

Minimum Operating Temperature

-40°C

Maximum Operating Temperature

85°C

COO (Country of Origin):
CN

RS PRO Industrial Circular Connector, 4 Contacts, IP68, Bayonet Coupling


This RS PRO Industrial Circular Connector is designed for robust applications requiring high water resistance. With an IP68 rating, it ensures reliable performance in demanding environments. The bayonet coupling mechanism provides secure and quick connections, making it ideal for industrial settings.

Features and Benefits


IP68 Waterproof Connector: Offers superior protection against dust and water ingress, ensuring durability in harsh conditions

Bayonet Coupling: Allows for quick and secure connections, reducing installation time and improving reliability

4 Contacts: Supports multiple connections, enhancing versatility in various applications

Voltage Rating of 500 V AC: Suitable for high-voltage applications, providing flexibility in use

Nylon 66 and Polycarbonate Housing: Delivers robust protection and longevity, even in challenging environments

Gold-Plated Contacts: Ensures excellent conductivity and resistance to corrosion, enhancing performance

Wide Operating Temperature Range (-40°C to 85°C): Suitable for extreme temperature conditions, ensuring consistent performance

Applications


Industrial automation
Outdoor equipment
Marine environments
Heavy machinery

Additional Information


Complies with IP68 standards for water and dust resistance
Available in both plug and socket configurations
Cable mount and in-line mount options for flexible installation

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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