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Figure 1. Real WAGO 221, 2273, 224 and WINSTA products

Recommended Titles

1. WAGO Wire Connectors: Pros, Cons and How to Use the 221 and 2273 Series
2. How to Use WAGO Connectors Safely: Lever vs. Push-Wire Types
3. WAGO 221 Connector Guide: Wire Types, Benefits and Common Mistakes
4. Choosing a WAGO Wire Terminal: Specifications That Matter
5. WAGO Wire Connector Review: Convenient, Compact and Easy to Inspect

Meta Description

Compare 29 WAGO connector types by junction-box, lighting, pluggable building, control-cabinet and PCB applications, plus 221 and 2273 pros, cons and installation steps.

Keywords

Main: WAGO connector, WAGO wire connector
Secondary: WAGO 221, WAGO 2273, lever connector, wire terminal
Long-tail: how to use WAGO connector, WAGO 221 stranded wire, WAGO 2273 solid wire range

Product Comparison

Item	WAGO 221 Lever	WAGO 2273 Push-Wire
Conductor	Solid, stranded and fine-stranded; check part range	Solid conductor 0.5–2.5 mm²
Operation	Lift lever, insert, close	Strip and push in
Strength	Easy inspection and reconnection	Compact and fast
Best fit	Mixed conductor types within specification	Compact solid-wire branches in junction boxes

1. What is a WAGO wire connector?

A WAGO connector is a wire-splicing component that uses spring pressure to retain the conductor instead of a screw terminal. The best-known example is the orange-lever 221 Series, while the compact 2273 PUSH WIRE® Series is designed for quick solid-conductor splicing in junction boxes. Transparent housings make it easier to inspect insertion. However, the WAGO name does not mean that every connector accepts every wire. Conductor type, cross-section, strip length, temperature and ratings vary by series and exact part number, so the marking and datasheet must be checked first.

2. Key differences between the 221 and 2273 Series

The 221 Series is operated by lifting a lever, inserting the conductor and closing the lever. It supports solid, stranded and fine-stranded conductors within the stated range and is convenient to disconnect. WAGO states that the 4 mm² family accepts fine-stranded conductors from 0.14 to 4 mm² and solid or stranded conductors from 0.2 to 4 mm². The 6 mm² family accepts all conductor types from 0.5 to 6 mm². The 2273 Series is a push-in product for solid conductors; the official range is 0.5 to 2.5 mm². It is very compact and fast, but it should not be chosen for flexible wire unless the exact product is approved for it.

 

3. Twenty-Nine WAGO Product Types by Application

WAGO products are not interchangeable versions of one connector. The portfolio includes installation splicing connectors, lighting connectors, WINSTA® pluggable building systems, control-cabinet terminal blocks and PCB connection products. The tables below organize representative families and formats by application. Always verify the exact part number, datasheet and approvals before purchase.

3-1. Junction-Box Splicing and Branching

No.	Product	Primary Use	Advantage	Limitation
1	221 4 mm², 2-wire	Single lighting splice or extension	Small and easy to reopen	Only two connection points
2	221 4 mm², 3-wire	One feed to two branches	General-purpose branching	Less expansion than 5-wire
3	221 4 mm², 5-wire	Multi-light common branching	Connects five conductors	Needs more box space
4	221 6 mm², 2-wire	One-to-one larger-conductor splice	6 mm² family available	Larger than 4 mm² type
5	221 6 mm², 3-wire	Three-way larger-conductor branch	Useful for larger sections	Check load and thermal conditions
6	221 6 mm², 5-wire	Multi-branch larger conductors	Large section plus five positions	More size and cost
7	221 Inline	Straight cable extension or repair	Good in narrow inline space	Primarily one-to-one
8	221 Double-Deck 10-wire	Large same-potential distribution	Up to ten conductors together	Requires wiring and space planning
9	222 Classic Lever	Existing-system service and general splicing	Robust, intuitive lever	Bulkier than 221
10	2273 PUSH WIRE®	Fast solid-wire junction-box branch	Very small and fast	Solid conductors only
11	773 PUSH WIRE®	Larger solid-conductor branch	4/6 mm² families available	Verify conductor restriction
12	2773 Inline PUSH WIRE®	Solid-wire repair and extension	Inline connection up to 4 mm² family	Less convenient to rework
13	243 MICRO PUSH WIRE®	Doorbell, intercom and signal wire	Tiny connector for small diameters	Do not confuse with power wiring
14	221 Ex Version	Approved hazardous-area equipment	Ex-approved configurations available	Do not substitute standard 221

3-2. Lighting, Motors and Pluggable Building Wiring

No.	Product	Primary Use	Advantage	Limitation
15	224 Lighting Connector	Solid building wire to fine-stranded luminaire lead	Tool-free overhead work	Check each side’s conductor range
16	WINSTA® MINI	LED lights and controls in tight spaces	Compact and quick to replace	Limited for high-power loads
17	WINSTA® MIDI	Office, hotel and general building wiring	Broad range; up to 4 mm² family	Plan coding and pole count
18	WINSTA® MAXI	Long runs and distribution-box feed	Suited to higher-current feed-in	Larger connector and cable
19	WINSTA® RD	Conduit runs in prefabricated buildings	Round format passes through conduit	Requires system cables/adapters
20	WINSTA® KNX	KNX, LON and Ethernet bus wiring	Coded standardized interface	Not for mains-power substitution
21	WINSTA® IDC	Tap-off from underfloor flat cable	Connects without cutting the cable	Use specified flat-cable system
22	LINECT® Interface Box	Plug luminaires into WINSTA system	Faster installation and cleaner enclosure	Verify luminaire compatibility

3-3. Control Cabinets, Machinery and PCB Connections

No.	Product	Primary Use	Advantage	Limitation
23	MCS MICRO	Compact sensor and PCB plug connection	Very small 2.54 mm pitch	Small conductor range
24	MCS MINI	Multipole signals and power in small devices	Compact and easy to exchange	Check pitch, poles and coding
25	MCS MIDI	Pluggable industrial equipment connection	Broad signal/power choices	Ratings vary by series
26	2059 SMD PCB Terminal	Low-profile LED and compact PCBs	Approx. 2.7 mm low profile	Focused on SMT and small wires
27	2060 SMD PCB Terminal	PCB for manual or automated wiring	Flexible for production and field wiring	Check PCB and soldering design
28	2061 SMD PCB Terminal	Lighting and power-electronics PCB wiring	Choice of actuation and poles	Check exact wire range
29	TOPJOB® S Rail Terminal	DIN-rail distribution and control cabinets	Rich marking, jumper and test options	Different job from small splicing connector

3-4. Protection and Mounting Accessories

A compatible Gelbox protects selected 221 and 2273 connectors from moisture, a 221 Junction Box organizes many splice points, and mounting carriers secure connectors to DIN rail or panels. These accessories do not splice wires themselves, but they can determine the quality and suitability of the completed installation. Any ingress rating applies to the specified complete protective arrangement, not automatically to a bare connector.

4. Advantages of WAGO connectors

First, installation is fast because no screw needs to be loosened and retightened. Second, spring pressure helps maintain a consistent contact when the correct product is installed within specification. Third, the transparent body and lever of the 221 Series make insertion easy to inspect and later disconnection straightforward. Fourth, the 221 Series can join different conductor types and cross-sections when they all fall within the connector’s approved range. Finally, the range includes multiple conductor counts, inline versions and mounting accessories, giving installers useful choices for branching, extension and fixed mounting.

5. Disadvantages and limitations

WAGO connectors can cost more than basic twist connections or low-cost terminals. They must still be protected in a suitable enclosure; moisture, dust, movement and pull forces require appropriate protection and strain relief. WAGO offers compatible Gelbox solutions that provide IPX8 moisture protection for selected 221 and 2273 connectors, but only when the specified combination and instructions are followed. WAGO also states that the 221 Series is not suitable for mixed aluminum-and-copper connections. Aluminum conductors require an approved connector, the specified contact paste where applicable, and compliance with local rules.

6. How to use a 221 lever connector

De-energize the circuit at the panel and verify absence of voltage with an appropriate tester. Strip the insulation to the length marked on the connector, taking care not to nick the copper or cut strands. Lift the lever fully, then insert the exposed conductor straight to the stop. Inspect through the transparent housing: the copper should reach the contact area while excessive insulation should not enter the clamping point. Close the lever completely and perform a gentle pull test. Repeat the visual and pull checks for every conductor, then place the completed splice in a suitable enclosure.

Figure 2. WAGO 221-413 product

Figure 3. WAGO 221 wiring installation

Figure 4. WAGO 221 conductor insertion photo

 

Figure 5. WAGO 221 installed in a junction box

7. How to use a 2273 push-wire connector

Strip an approved solid conductor to the specified length and push it straight into the 2273 connector. The lever-free process is simple, but short stripping or angled insertion may prevent full contact. Inspect conductor position through the housing and perform a gentle pull test. Follow the exact product instructions for removal and reuse; do not force, twist or reuse a damaged connector. If stranded or fine-stranded wire must be connected, change to a product such as an approved 221 Series connector rather than improvising with the 2273.

8. Common installation mistakes

Frequent errors include stripping too little so that the conductor does not reach the contact, or stripping too much and leaving exposed copper. Other problems are forcing flexible wire into a solid-wire 2273, exceeding the connector’s cross-section range, using oxidized or damaged conductors, leaving the splice unenclosed, and expecting the connector to act as cable strain relief. Where movement or pull is possible, provide independent cable retention and strain relief.

Figure 6. Real WAGO products by application

9. Best-fit applications

At home, the 221 Series is convenient for lighting replacements, branches inside ceiling junction boxes and wiring that may need future inspection. It is especially useful when a fine-stranded luminaire lead must be joined to a building’s solid conductor, provided both wires fit the selected part’s range. The 2273 is well suited to compact junction-box branching of approved solid conductors. High-current equipment, elevated temperatures, outdoor or wet locations, vehicle vibration and aluminum wiring require separate evaluation of ratings, approvals, enclosure, conductor and local electrical code.

10. Buying checklist

Start with conductor type and cross-section, not simply the connector’s appearance. Select the required conductor count, compare the exact part number on the product and package, and purchase from a reliable distributor. Then assess available box space, moisture, cable pull and future access. When those factors match the product specification, the connector can improve both installation speed and maintainability.

FAQ

Q. Can a WAGO 221 connector be reused?

The lever allows normal disconnection, but a connector with damage, deformation or signs of overheating should not be reused. Follow the exact part instructions.

Q. Can stranded wire be inserted into a 2273?

The 2273 product family is specified for solid conductors. Choose an approved 221 Series product for stranded or fine-stranded conductors.

Q. Can it be used directly outdoors or in a bathroom?

Do not leave a standard connector exposed. Use a suitable enclosure, ingress protection and cable-entry protection for the environment.

Q. Is electrical tape required after connection?

Tape does not substitute for a correct connection. The priority is correct installation and placement inside an enclosure that complies with local requirements.

Conclusion

WAGO connectors are attractive because they are compact, fast and comparatively easy to inspect. Those advantages only become safe in practice when the exact connector matches the conductor and environment. Distinguish the 221 from the 2273, check conductor type, cross-section, strip length and enclosure, and follow the product data. Fixed wiring work must also comply with local electrical codes and qualification requirements; consult a licensed professional when in doubt.

Sources

WAGO, The 221 Series — https://www.wago.com/global/products/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/221

WAGO, Installation Terminal Blocks and Connectors — https://www.wago.com/global/products/electrical-interconnections/discover-installation-terminal-blocks-and-connectors

WAGO, WINSTA Pluggable Installation Connectors — https://www.wago.com/global/products/electrical-interconnections/discover-pluggable-connectors/winsta

WAGO, SMD PCB Terminal Blocks — https://www.wago.com/global/electrical-interconnections/discover-pcb-connection/smd-pcb-terminal-blocks

WAGO, 2273-204 product data — https://www.wago.com/global/installation-terminal-blocks-and-connectors/push-wire-splicing-connector/p/2273-204

WAGO, Interconnection Technology Product FAQ — https://www.wago.com/global/product-faq/interconnection-technology

WAGO, Gelbox moisture protection — https://www.wago.com/global/products/electrical-interconnections/discover-installation-terminal-blocks-and-connectors/gelbox-from-wago