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Wago connection terminal, 221 series

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Wago connection terminal, 221 series

  • Min./max. wire cross section: 0.14-4.0 mm²
  • Wire-stripping length: 11 mm
  • Nominal current: 32 A
  • Flammability: Self-extinguishing in accordance with UL94 V2
  • Depth: 18.6 mm
  • Height: 8.3 mm
  • Nominal voltage: 450 V
  • Colour: Transparent

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Art.-no. Number of ladders Number of wires Width Max. ambient temperature Quantity PU
0556 221 412
2 2 13.1 mm +85 °C
0556 221 413
3 3 18.7 mm +85 °C
0556 221 415
5 5 29.9 mm

Packaging unit

The packaging unit (EU) indicates the number of items in a box, which corresponds to the packaging of the product. Here you specify the desired quantity of UE.

Structure of our article number

The article number is made up of the following: VVVVAAABBB
VVVV = 4 digits for prefix number (please note that the first digit is currently always 0)
AAA = 3 digits for dimension part 1
BBB = 3 digits for dimension part 2

Example article number structures:
Example 1: Screw with dimensions of 4x10 mm:
00574 10 (2 spaces between the 4 and the 10)

Example 2: Screw with dimensions of 10x20 mm:
005710 20 (1 space between the 10 and the 20)

Example 3: Flat washer with an internal diameter of 6 mm:

Information on price display

Price per packaging unit (PU):
The displayed price is always in line with the displayed packaging, if the PU is 250 the price for 250 units, if the PU is 300 the price for 300 units.

Price with price key representation (PSL):
The price always applies to a quantity ruled through the price key:
Price for 1 unit
Price for 100 units
Price for 1000 units


The quantity shows the number of pieces or units of measure contained in the order or delivery for the respective article.
In contrast to sales packaging and secondary packaging, the disposal costs for chemical-technical products are shown separately. The breakdown of the individual costs can be found on the relevant products and also in the shopping cart, as well as in our General Terms and Conditions (GTC).
Art.-no. Cust. Mat. No.

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Product information

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Technical information

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Connection terminals that greatly facilitate work in practice

Owing to their extremely small dimensions, COMPACT connection terminals from WAGO are ideal for tight spaces.
Similarly impressive: The transparent housing: You can now see right away whether or not electrical contact is correctly applied to the conductors, and even whether the stripped lengths are suitable. Two easily accessible test openings, one in the direction of the conductor connection and one on the opposite side, ensure convenient test conditions even in the installed state.

The connection terminals also demonstrate impressively simplified operation: The actuation levers can now be opened and closed with noticeably less application force. Thanks to the side recessed handles, the 221 can be securely handled in any situation.

One connection terminal – all conductor types
The 2, 3 and 5-conductor terminals connect fine-wire conductors from 0.14-4 mm² and single and multi-wire conductors from 0.2-4 mm².
The terminals are therefore ideal for connecting different conductor types and cross-sections together. Tin-plated bus bars ensure permanently gas-tight and secure contacting of the conductors.
Designed for up to 32 A/450 V and for high continuous usage temperatures up to 105°C, the connection terminals facilitate operation in ambient temperatures of up to 85°C (T85) for small and large consumers. The 221 series can also be used worldwide owing to approvals including ENEC and UL.


Up to 40% less space requirement than predecessor series WAGO 222.
Transparent housing for visual control of correct conductor position and correct stripped length.
Convenient connection owing to reduced actuation forces.
Custom mixable conductor types and connection cross-sections from 0.14 -4 mm².
Two test openings for all common test tips.