Overview

The Wago 770-203 is a professional 3-pole WINSTA® MIDI female socket connector designed for industrial and building applications. This socket connector features 100% protection against mismating with a 10mm pin spacing and dual conductor connection per pole. Rated for 25 A current and 250V voltage, the 770-203 replaces traditional screw terminals with a pluggable connection system that reduces installation errors and accelerates wiring workflows.

Key Features

• 4mm² wire capacity with 25A nominal current rating
• 100% mismating protection with 10mm pin spacing
• Push-in CAGE CLAMP® spring pressure connection technology for reliable contact
• Dual conductor connections per pole for loop-through connections or jumpers
• Code A coding standard ensures compatibility with A-coded mating connectors
• IP20 protection rating when unmated; IP2xC when mated with strain relief housing
• RoHS compliant

Technical Specifications

Key technical parameters for the Wago 770-203 socket connector:

Electrical & Physical

• Current Rating: 25 A
• Voltage Rating: 250 V
• Wire Capacity: 4 mm² (20–12 AWG)
• Poles: 3-pole
• Coding: Code A
• Pin Spacing: 10 mm (0.394 in)
• Weight: 9.405 grams
• Color: Black
• Country of Origin: Germany

Typical Applications

The WINSTA® MIDI female connector is the pluggable solution for control cabinets, PCBs, and lighting connections. Common uses include building installations, railway technology, and industrial applications. The A-coded WINSTA® MIDI connector is typically used for general mains applications in power distribution.

Compatibility & Replacements

Compatible With

• Wago WINSTA® MIDI 770 Series plugs (Code A)
• Industrial control cabinet wiring systems
• PCB-mounted pluggable connector systems
• General mains power distribution networks (250V, 25A)

Replaces / Drop-In Replacement For

The Wago 770-203 socket is a standard component in the WINSTA® MIDI 770 family. It directly pairs with Code A mating plugs including the 770-113 and 770-213 (both 3-pole plugs without strain relief). Socket variants with strain relief are available as 770-203/035-000. Verify compatibility with your system integrator before ordering.

Works With

• Wago 770-113: 3-pole plug with strain relief housing
• Wago 770-213: 3-pole plug without strain relief housing
• Wago 770-133: 3-pole white plug with strain relief housing
• Wago 770-253: 3-pole grey plug without strain relief housing
• All Code A WINSTA® MIDI 770 Series connectors
• Wago CAGE CLAMP® spring pressure terminals