WAGO 281-512/281-417 Fuse Plug, Neon Indication, 6mm

Technical Overview

The WAGO 281-512/281-417 Fuse Plug is a robust solution for circuit protection, designed with a convenient pull-tab for miniature metric fuses (5 x 20 mm and 5 x 25 mm). It features an integrated neon lamp for immediate blown fuse indication, operating at 230 V. With a compact 6 mm width, this gray fuse plug ensures effortless electrical installations in AC/DC systems. Constructed from Polyamide (PA66) with a V0 flammability rating, it offers reliable performance for nominal voltages up to 250 V and rated currents of 6.3 A, ideal for industrial and control applications requiring quick fault diagnosis and safe fuse replacement.

Key Features

Integrated pull-tab for easy and safe fuse replacement.
Blown fuse indication via neon lamp for quick fault identification.
Compatible with miniature metric fuses: 5 x 20 mm and 5 x 25 mm.
Provides high-density wiring solutions with a compact 6 mm width.
Features two test slots with touch contacts for convenient testing.
Can function as a disconnect plug in combination with a shorting link.
Ensures safety by isolating live parts during fuse replacement.
Prevents unintentional reclosing of circuits after fuse removal.
Utilizes a top-of-unit marking slot for clear carrier terminal block identification.
Constructed from Polyamide (PA66) with a V0 flammability rating for enhanced safety.

Technical Specification Matrix

Parameter	Value
Nominal Voltage (III/3)	250 V
Rated Current	6.3 A
Operation Status Indicator	None (Blown fuse indication by neon lamp is the primary indicator)
Leakage Current (blown fuse)	Neon lamp < 0.4 mA
Voltage Type	AC/DC
Fuse Type	Cylindrical fuse; 5 x 20 mm and 5 x 25 mm
Width	6 mm / 0.236 inches
Color	gray
Material Group	I
Insulation Material (main housing)	Polyamide (PA66)
Flammability Class per UL94	V0
Fire Load	0.082 MJ
Continuous Operating Temperature	-60 ... +105 °C

Industrial Applications

1. Industrial Control Panel Protection

This fuse plug provides compact, reliable circuit protection for control and signaling circuits within industrial automation panels. Its 6mm width enables high-density integration, crucial for maximizing space in complex control cabinets, while the neon lamp offers instant fault visualization.

Problem Solved

Protects sensitive control components from overcurrents and short circuits. The clear visual indication of a blown fuse (neon lamp) significantly reduces troubleshooting time in busy industrial environments, improving system uptime.

Control circuit protectionOvercurrent protectionFault indicationIndustrial automationDIN-rail mountingSpace-saving design

2. Machine Safety System Integration

Critical machine safety circuits demand robust and easily maintainable fuse protection. The WAGO 281-512/281-417 fuse plug's design ensures safe fuse replacement by separating live parts and preventing accidental contact, which is vital in high-voltage industrial machinery and safety applications.

Problem Solved

Offers a secure and isolated method for replacing fuses in safety-critical applications, reducing the risk of electric shock for maintenance personnel. The neon lamp quickly signals a tripped safety circuit, aiding rapid response to potential hazards.

Machine safetyCircuit isolationSafe fuse replacementPersonnel safetyAC/DC systemsSystem reliability

3. Building Automation and HVAC Systems

For fuse protection within building automation and HVAC systems, where space is often at a premium and reliable operation is expected, this compact fuse plug is ideal. It effectively protects lighting, motor, and sensor circuits with built-in visual fault indication and a wide operating temperature range.

Problem Solved

Provides space-efficient overcurrent protection for various loads in commercial or residential building infrastructure. The neon lamp allows maintenance staff to quickly identify and replace blown fuses without extensive system tracing, ensuring continuous operation of critical building services.

Building management systems (BMS)HVAC controlCircuit protectionCompact designFault diagnosisFacility maintenance250V AC/DC