Wago 281-603 281-401 Terminal Block

Description:

The Wago 281-603 / 281-401 Component Terminal Block is a DIN rail-mounted industrial terminal block designed to provide secure conductor termination and integrated diode protection within control circuits, automation systems, and electrical distribution assemblies. Commonly installed in PLC cabinets, machine control panels, manufacturing equipment, process automation systems, and industrial electrical enclosures requiring reliable field wiring connections and circuit isolation. Maintenance electricians, panel builders, OEM manufacturers, and system integrators use this terminal block for control panel assembly, wiring expansion, electrical maintenance, and replacement of damaged component terminals.

Applications:

The Wago 281-603 / 281-401 Component Terminal Block is commonly used in industrial automation systems, relay logic circuits, machine wiring installations, process control equipment, and electrical distribution panels where integrated diode protection is required for signal conditioning, suppression, and circuit isolation. Its compact DIN rail design supports organized wiring layouts, simplified troubleshooting, and reliable electrical connectivity in commercial and industrial environments. The built-in 1N5408 diode helps protect control circuits and connected components from reverse current flow and transient conditions.

Technical Specifications:

• Manufacturer: Wago
• Part Number: 281-603 / 281-401
• Product Type: Component Terminal Block
• Conductor Configuration: 2-Conductor
• Integrated Component: 1N5408 Diode
• Diode Orientation: Anode Right Side
• Rated Voltage: 250V
• Rated Current: 1.5A
• Conductor Size Range: 0.08-4.0 mm²
• Wire Size Range: AWG 28-12
• Connection Technology: CAGE CLAMP® Spring Clamp
• Mounting Type: DIN Rail 35 x 15 mm / 35 x 7.5 mm
• Terminal Width: 6 mm
• Length: 29 mm
• Height: 53 mm
• Color: Gray
• Function: Wire Termination, Circuit Protection, and Signal Routing

Common Replacements:

• WAGO 281-603/281-411 Terminal Block
• WAGO 281-673/281-401 Component Terminal Block
• Phoenix Contact Component Terminal Block with Diode