WAGO 821-104 4-Pole Through-Hole PCB Terminal Block, Push-button CAGE CLAMP, 5 mm Pitch, Light Gray

The WAGO 821-104 is a high-quality 4-pole PCB terminal block featuring the innovative Push-button CAGE CLAMP® connection technology. Designed for through-hole (THT) mounting with a 5 mm pin spacing, this component ensures reliable and maintenance-free wiring for a wide range of industrial and electronic applications. The front-entry wiring and push-button actuation allow for fast, tool-free conductor insertion, making it ideal for automated assembly and field wiring.

Advantages

Push-button CAGE CLAMP® technology enables effortless, vibration-proof connections without special tools. The compact design saves valuable PCB space, while the light gray polyamide housing with orange actuation buttons provides clear visual identification. Rated for 320 V and 12 A, it meets stringent safety standards with UL94 V-0 flammability rating and supports solid and fine-stranded conductors from 28 to 12 AWG.

Suitable for

• Industrial control systems and automation panels
• Building automation and lighting controls
• Power supply and distribution units
• Electronic devices requiring reliable PCB connections

Key specifications

• Number of Poles: 4
• Pin Spacing (Pitch): 5 mm / 0.197 inch
• Connection Technology: Push-button CAGE CLAMP®
• Actuation Type: Push-button
• Mounting Type: Through-hole (THT)
• Rated Voltage (EN): 320 V
• Rated Impulse Voltage (EN): 4 kV
• Rated Current (EN): 12 A
• Conductor Size (Solid): 0.08 - 2.5 mm² / 28 - 12 AWG
• Conductor Size (Fine-Stranded): 0.08 - 2.5 mm² / 28 - 12 AWG
• Stripped Length: 8 - 9 mm / 0.31 - 0.35 inch
• Wiring Type: Front-entry
• Insulating Material: Polyamide (PA 66)
• Flammability Rating: UL94 V-0
• Operating Temperature: -60 ... +105 °C
• Color: Light gray (housing), Orange (buttons)
• Overvoltage Category: III
• Pollution Degree: 2
• Solder Pin Dimensions: 0.8 x 0.8 mm
• Solder Pin Length: 3.5 mm

Recommendations

For optimal performance, use with WAGO compatible tools and accessories. Ensure proper PCB hole diameter for THT mounting. Always follow manufacturer guidelines for conductor preparation and stripping length.