Overview
The Wago 770-503 strain relief housing is a 3-pole WINSTA MIDI connector accessory engineered for cable connection security in industrial automation and control systems. This housing accommodates 8.0–11.5 mm sheathed cables and is 55 mm in length, constructed from black polyamide material for durability in harsh industrial environments. The lot of 33 units provides cost-effective inventory for system integrators, maintenance teams, and panel builders who require consistent strain relief solutions.
Key Features
- 3-pole configuration designed for 2 cables
- Cable diameter range: 8.0–11.5 mm
- 55 mm strip length
- Black polyamide construction for chemical and abrasion resistance
- RoHS compliant for environmental compliance
- Drop-in compatible with standard WINSTA MIDI pluggable connectors
Technical Specifications
- Cable Diameter (Sheathed): 8.0–11.5 mm
- Strip Length: 55 mm
- Poles: 3
- Material: Black polyamide
- Configuration: For 2 cables
- RoHS Compliance: Yes
- Product Family: WINSTA MIDI Series
- Quantity: Lot of 33
Typical Applications
The Wago 770-503 is widely used in:
- Industrial control panels and junction boxes
- Automation machinery and production line systems
- Machine-mounted electrical assemblies requiring vibration resistance
- PLC and drive cabinet wiring
- Field device integration in manufacturing environments
- OEM and system integrator connector assemblies
Compatibility & Replacements
Compatible With
- WAGO WINSTA MIDI pluggable connectors and sockets
- WAGO WINSTA MIDI 3-pole connector plug modules
- Industrial automation panel building systems
- Standard sheathed cable assemblies 8.0–11.5 mm diameter
Replaces / Drop-In Replacement For
The Wago 770-503 is the standard strain relief housing for all WINSTA MIDI 3-pole connectors. Alternative cable diameter variants include 770-503/023-000 (4.5–8.0 mm) and 770-503/021-000 (9.0–13.0 mm for single-cable applications).
Works With
- WINSTA MIDI plug and socket connector series (all voltage/current ratings)
- WAGO terminal block and connector ecosystems
- Standard industrial electrical assembly practices
- IEC 61076-2-109 compliant cable connection systems




















