WIELAND ELECTRIC RST20I3S B1 ZR Female Circular Connector, 3-Pole, 250V, 20A, Screw Terminal, Black, IP66/IP68/IP69

The WIELAND ELECTRIC RST20I3S B1 ZR is a high-performance female circular connector from the RST20 series, designed for reliable power transmission in demanding industrial environments. With a 3-pole configuration, rated voltage of 250 V AC, and current rating of 20 A, this connector ensures safe and efficient electrical connections. Its robust housing, made of polyamide (PA), offers excellent mechanical strength and chemical resistance. The connector features a screw terminal termination for secure and easy wiring, accommodating cable diameters from 6 to 10 mm. It is protected against ingress with IP66, IP68 (2m, 2h), and IP69 ratings, making it suitable for harsh conditions including high-pressure washdowns. The silver-plated contacts provide low resistance and high corrosion resistance. The B1 mechanical coding prevents mismating, ensuring correct installation. Operating temperature range is -30 °C to +100 °C, with pollution degree 3 and overvoltage category III. Flammability class UL94 V-0 ensures safety. This connector is ideal for use in automation, machinery, and industrial control systems.

Advantages

High reliability and durability in harsh environments due to IP66/IP68/IP69 protection and robust polyamide housing. Secure screw terminal connection ensures low contact resistance and easy field installation. Mechanical coding B1 prevents incorrect mating, reducing downtime. Wide operating temperature range and high pollution degree suitability for industrial applications.

Suitable for

• Industrial automation and control systems
• Machinery and equipment manufacturing
• Power distribution and signal transmission
• Outdoor and washdown applications

Key specifications

• Connector Type: Circular Connector
• Gender: Female (Socket)
• Number of Poles: 3
• Rated Voltage: 250 V AC
• Rated Current: 20 A
• Cable Diameter: 6 - 10 mm
• Termination: Screw Terminal
• Protection Class: IP66, IP68 (2m; 2h), IP69
• Color: Black
• Housing Material: Polyamide (PA)
• Contact Material: CuZn (Brass), Silver-plated
• Mechanical Coding: B1
• Operating Temperature: -30 °C to +100 °C
• Pollution Degree: 3
• Overvoltage Category: III
• Flammability Class: UL94 V-0

Recommendations

For optimal performance, ensure proper cable stripping and torque settings as per manufacturer guidelines. Use with matching male connectors from the RST20 series. Suitable for use in applications requiring high ingress protection and reliable power connections.