Siemens 6ES5490-8MB11 Screw Connector

Technical Specifications and Connection Details

The Siemens 6ES5490-8MB11 screw connector serves as a reliable wiring interface for SIMATIC S5 modules. This connector provides 20 screw terminals for secure and durable field wiring connections. It handles conductors up to 2.5 mm² (AWG 14) for flexible wires and 1.5 mm² for solid wires . The connector supports wire diameters from 0.25 mm² to 2.5 mm² . Its dimensions measure approximately 10.5 cm x 5.8 cm x 2.5 cm and it weighs about 0.15 kg . Each terminal accommodates up to 2 wires of the same cross-section . The connector features locking screws for each terminal to ensure vibration-proof connections.

Parameter	Specification
Manufacturer	Siemens
Model Number	6ES5490-8MB11
Product Family	SIMATIC S5
Terminals	20 screw-type
Wire Range (Flexible)	Up to 2.5 mm²
Wire Range (Solid)	Up to 1.5 mm²
Wires per Terminal	2 (same cross-section)
Dimensions	10.5 x 5.8 x 2.5 cm
Weight	0.15 kg

Functional Capabilities

The 6ES5490-8MB11 provides a robust connection method for field I/O devices to S5 modules. It replaces the traditional front connector and offers secure screw-lock mechanisms for each terminal . The module includes a keying feature that prevents incorrect mating with mismatched modules . This connector ensures reliable signal transmission between field sensors and the control system. Its screw terminals allow for quick and straightforward wiring modifications during maintenance tasks.

Application Scenarios

This connector suits S5-150U/S-155U series programmable controllers . The 6ES5490-8MB11 connects various sensors, switches, and actuators to the PLC’s digital and analog modules. Its robust design ensures reliable operation in industrial environments with vibration and electrical noise. Users can also employ this connector for retrofitting or upgrading existing installations . The compact footprint facilitates installation in space-limited control cabinets .