The Schneider Electric LA4DWB is a transistor interface module for the TeSys D contactor range, enabling direct connection of 24 V DC transistor (PLC) outputs to AC contactor coils rated up to 250 V AC. Compatible with TeSys D contactors LC1D09 to D115, it mounts directly on top of the contactor for a compact, integrated installation.

Technical specifications:

• Commercial reference: LA4DWB
• Manufacturer: Schneider Electric
• EAN: 3389110236477
• Series / range: TeSys D
• Product type: Interface module, transistor technology
• Compatible with: LC1D09…D115
• Number of poles: 3P
• Rated supply voltage: 24 V DC
• Control circuit voltage range: 5…30 V DC at 20C
• Rated insulation voltage: 250 V AC (IEC 60947-5-1)
• Rated control circuit voltage: 24…250 V AC
• Current consumption: 8.5…15 mA at 20C
• Permitted thermal current: 8 A at less than 50C
• Electrical endurance: 20 million cycles at 240 V
• Heat dissipation: 0.4 W
• Micro-interruption resistance: 1 ms
• Mounting: Top mounting
• Connection: Control circuit – 1…2.5 mm flexible or solid, with or without ferrule
• Local signaling: LED indicator
• IP protection: IP2x (IEC 60529)
• Built-in protection: Diode
• Operating temperature: -25…55C
• Storage temperature: -40…80C
• Height: 19 mm
• Weight: 0.045 kg
• Standards: IEC 60255-5
• Certifications: CSA, UL

Features and benefits:

• Transistor input accepts 5…30 V DC, compatible with standard PLC transistor outputs
• LED indicator provides immediate local status signaling without additional instrumentation
• Built-in diode protection guards against voltage spikes in the control circuit
• 20 million cycle electrical endurance ensures reliable long-term operation
• Top-mount design clips directly onto TeSys D contactors for a space-saving assembly

Applications:

• Motor control panels where PLC transistor outputs must drive AC contactor coils
• Industrial automation cabinets interfacing 24 V DC control logic with 250 V AC contactors
• Machine control systems built around TeSys D contactors LC1D09 to D115
• Building automation and HVAC panels using Schneider TeSys D motor starters

Compliant with IEC 60255-5 and IEC 60947-5-1. Certified by CSA and UL. Part of the Schneider Electric TeSys D range.

Also known as: Schneider LA4DWB, Schneider Electric LA4DWB, TeSys D transistor interface module, LA4D interface amplifier.