The Balluff BKS-S109-RT14 is a field-attachable M12 male connector with a 4-pin straight configuration, used for terminating cordsets on site rather than relying on pre-moulded assemblies. It accepts cable diameters between 2.9mm and 5.1mm with conductor cross sections from 0.14 to 0.34 mm², and is rated IP67 for use in environments requiring protection against dust and temporary immersion. The housing and contact carrier are made from PA, with brass contacts and a brass, nickel-plated jacket nut, supporting an operating voltage of 32 VDC/VAC and a rated current of 4A. It is suited to automation and machine-building applications where field termination of sensor or actuator cabling is required, across an operating temperature range of -40°C to 85°C.
Key specifications
| IP Rating | IP67 |
| Temperature: Operating / Dynamic | -40°C to 85°C |
| Material: Housing / Grip | PA |
| Material: Jacket / Cover Nut | Brass / Nickel-plated |
| Material: Sensing Surface / Contacts | Brass |
| Material: Contact Carrier | PA |
| Material: Wire Insulation | PP / PVC / TPE (Conductor Insulation Material) |
| Cable Diameter (mm) | 2.9mm ... 5.1mm |
| Conductor Cross-section | 0.14...0.34 mm² |
| Thread | M12 x 1 |
| Connection Type | M12 / Male Straight / 4 Pin |
| Tightening Torque | 0.6 |
| Operating Voltage | 32 VDC / 32 VAC |
| Current Rating / Rated Current | 4A |