General
Terminal type	three-tier terminal
Function	protective earth/through/through terminal PE/L/L
Connection technology	Push-in CAGE CLAMP®
Conductor cross-section	0,25-2,5 mm²
Maximum conductor cross-section	4 mm²
Colour	Grey
DIN rail	35 x 15 mm and 35 x 7.5 mm
Explosion safety	Ex e II
Label carrier	None

The WAGO 2002-3227 is a three-level terminal block for use in industrial electrical installations, particularly in systems with increased safety requirements. It serves as a protective earth/through/through terminal block with poles PE/L/L and enables secure connection of conductors with cross-sections from 0.25 to 2.5 mm² (optionally up to 4 mm²). The terminal block is suitable for use in explosion-protected areas according to category Ex e II and is mounted on standard support rails with dimensions 35 x 15 mm and 35 x 7.5 mm. The connection technology is based on the Push-in CAGE CLAMP® system, which allows for quick and reliable connections without tools.

Applications

The terminal block is designed for use in industrial electrical systems, particularly in environments where increased explosion protection is required. The approval for Ex e II makes it suitable for applications in Zone 2 (non-continuously explosion-hazardous areas) according to European standards for explosion-protected equipment. The use on support rails with 35 x 15 mm and 35 x 7.5 mm width enables flexible mounting in standard control panels and distribution boxes. The terminal block is suitable for connecting protective earth conductors (PE) as well as through conductors (L), contributing to safe power distribution in complex circuits.

Functions and Equipment in Detail

The terminal block features a Push-in CAGE CLAMP® system, enabling simple and fast connection of conductors without tools. The conductor connection is achieved by inserting the cable into the terminal connection, where mechanical tension is secured by spring force. The terminal block is designed for conductor cross-sections of 0.25 to 2.5 mm², with an optional extension up to 4 mm². The grey color corresponds to the standard for industrial terminal blocks and supports clear visual differentiation in the control panel.

Technology Explained Simply

The Push-in CAGE CLAMP® system operates on the principle of spring force: when the cable is inserted into the connection, an internal spring is activated, holding the cable securely. The connection is self-closing and requires no additional tools. The terminal block is suitable for use in explosion-protected installations according to Ex e II, meaning it may be used in areas with increased explosion risk (Zone 2), provided the entire installation complies with relevant standards. The use on support rails with 35 x 15 mm and 35 x 7.5 mm width enables universal mounting in standard control panels.

Compatibility and Accessories

The terminal block is compatible with various accessories that extend its functionality. These include, for example, insulation stop (2002-172), pluggable conductor bridges (2009-414), wire end ferrules (216-263), wire chain bridges (210-103), steel support rails (210-114, 210-506), endless bridges (2002-413), cover profile carriers (709-169), labeling adapters (2009-198), multi-labeling systems (793-5501/000-006, 793-5501/000-007, 793-5501/000-023), comb bridges (2002-409, 2002-409/000-005), Mini-WSB quick labeling systems (248-501/000-012, 248-501/000-005) as well as Mini-WSB signs/rolls (2009-145/000-006, 2009-145/000-005). These components can be used for better structuring, labeling, or connecting conductors, with the exact selection depending on the application.

Mounting and Installation

Mounting is performed on standard support rails with dimensions 35 x 15 mm and 35 x 7.5 mm. The terminal block is installed on the rail using a screwdriver or a special mounting plier, with the integrated clamping mechanism ensuring secure fastening. Conductor connections are made by inserting them into the push-in connection, where spring force secures the connection. The terminal block is intended for use in control panels and distribution boxes, with mounting recommended in a clean, dry, and accessible area.

Operational Advantages

The terminal block provides a reliable and fast connection of conductors without tools, reducing installation time. The approval for Ex e II expands its application range into explosion-hazardous environments. Compatibility with various accessories allows flexible adaptation to specific requirements. Use on standard support rails ensures universal installation capability in existing electrical systems. The grey color supports clear visual differentiation in the control panel, facilitating maintenance and inspection.