20.21.8.024.4000

**20 SERIES** 

## **1 or 2 Pole 16 A Step relays for direct 35 mm rail (EN 60715) mounting** 

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20.21<br>**----- End of picture text -----**<br>


## **20.22, 24, 26, 27, 28** 

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20.23<br>**----- End of picture text -----**<br>


- 17.4 mm wide 

- Test button with mechanical indicators 

- Choice of 7 switching sequences 

- AC coils and DC coils 

- Identification label 

- Possible to connect illuminated push buttons with the additional part 026.00 

- 35 mm rail (EN 60715) mount 

- Cadmium free contact material 

20.21/22/24/26/27/28/23 

Screw terminal 

- Single phase switch 1 NO (SPST-NO) 

- 35 mm rail (EN 60715) mount 

- Double phase switch 

- 35 mm rail (EN 60715) mount 

- Double phase switch 1NO+1NC (SPST-NO+SPST-NC) 

- 35 mm rail (EN 60715) mount 

## _For UL ratings see:_ 

_“General technical information” page_ V 

For outline drawing see page 3 

## **Contact specification** 

||**Contact specification**|||||||
|---|---|---|---|---|---|---|---|
||Contact configuration|1 NO (SPST-NO)|||2 NO (DPST-N~~O~~)||1NO+1NC (SPST-~~N~~O+SPST-NC)|
||Rated current/Maximum peak current<br>A|16/30||||16/30|16/30|
||Rated voltage/<br>Maximum switchingvoltage<br>V AC|250/400||||250/400|250/400|
||Rated load AC1<br>VA|4000||||4000|4000|
||Rated load AC15 (230 V AC)<br>VA|750||||750|750|
||Nominal lamp rating:<br>230 V incandescent/halogen W|2000||||2000|2000|
||fluorescent tubes with<br>electronic ballast W|1000||||1000|1000|
||fluorescent tubes with<br>electromechanical ballast W|750||||750|750|
||CFL W|400||||400|400|
||230 V LED W|400||||400|400|
||LV halogen or LED with<br>electronic ballast W|400||||400|400|
||LV halogen or LED with<br>electromechanical ballast W|800||||800|800|
||Minimum switching load<br>mW (V/mA)|1000 (10/10)|||1000 (10/10)||1000 (10/10)|
||Standard contact material<br>**Coil specification**|AgSnO2||||AgSnO2|AgSnO2|
||Nominal voltage (UN)<br>V AC (50/60 Hz)||8 - 12 - 24 - 48 - 110 - 120 - 230 - 240|||||
||V DC|12 - 24 - 48 - 110|||12 - 24 - 48 - 110|12 - 24 - 48 - 110|12 - 24 - 48 - 110|
||Rated power AC/DC<br>VA (50 Hz)/W|6.5/5||||6.5/5|6.5/5|
||Operating range<br>AC||(0.85…1.1)UN(50 Hz)/(0.9…1.1)UN(60 Hz)||||(60 Hz)|
||DC<br>**Technical data**|(0.9…1.1)UN|||(0.9…1.1)UN||(0.9…1.1)UN|
||Mechanical life AC/DC<br>cycles|300 · 103|||300 · 103||300 · 103|
||Electrical life at rated load in AC1<br>cycles|100 · 103|||100 · 103||100 · 103|
||Minimum/Maximum impulse duration|0.1 s/1 h (according to EN 60669)|0.1 s/1 h (according to EN 60669)|0.1 s/1 h (according to EN 60669)|||0.1 s/1 h (according to EN 60669)|
|III-2016, www.findernet.com|Insulation between coil<br>and contacts(1.2/50µs)<br>kV<br>Ambient temperature range<br>°C<br>Protection category<br>**Approvals**(according to type)|4<br>–40…+40<br>IP 20<br>~~C€~~|~~HAL~~|~~S©~~|4<br>–40…+40<br>IP 20<br>~~©EB®RNA~~||4<br>–40…+40<br>IP 20<br>~~RNAWis~~|



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**20 SERIES** 

## **Ordering information** 

Example:  20 series relay, 35 mm rail (EN 60715) mount, double phase switch, 2 NO 16 A contacts, coil rated at 12 V DC, AgSnO2 contacts. 

**2 0 . 2 2 . 9 . 0 1 2 . 4 0 0 0** 

## **Series** 

## **Contact material** 

0 =  AgNi 

## **Type** 

4 =  AgSnO2 

2 =  35 mm rail (EN 60715) mount 

## **No. of poles** 

**Coil voltage** See coil specifications 

1 =  Single phase switch 1 NO (SPST-NO) 

- 2 =  Double phase switch 2 NO (DPST-NO) 

3 =  Double phase switch 1 NC+ 1 NO (SPST-NO+SPST-NC) 

4 =  4 sequence double phase switch 2 NO (DPST-NO) 

## **Coil version** 

8 =  AC (50/60 Hz) 

9 =  DC 

6 =  3 sequence double phase switch 2 NO (DPST-NO) 

7 = 3 sequence double phase switch 2 NO (DPST-NO) 

8 =  4 sequence double phase switch 2 NO (DPST-NO) 

## **Technical data** 

## **Insulation** 

|Dielectric strength<br>between supplyand contacts<br>V AC|3500|
|---|---|
|between open contacts<br>V AC|2000|
|between adjacent contacts<br>V AC <br>**Other data**|2000|
|Power lost to the environment||



with rated current and coil deenergised Wgised Wised W 1.3 (20.21, 20.23, 20.28)(20.21, 20.23, 20.28)20.21, 20.23, 20.28), 20.23, 20.28) 20.23, 20.28), 20.28) 20.28)) 

with rated current and coil deenergised Wgised Wised W 1.3 (20.21, 20.23, 20.28)(20.21, 20.23, 20.28)20.21, 20.23, 20.28), 20.23, 20.28) 20.23, 20.28), 20.28) 20.28)) 2.6 (20.22, 20.24, 20.26, 20.27) ©[Screw torque ] Nm ~~pO~~ 0.8 0.8 **Coil terminals Contact terminals** Max. wire size solid cable stranded cable solid cable stranded cable ~~————~~ mm[2] 1 x 4 / 2 x 2.5 1 x 2.5 / 2 x 2.5 1 x 6 / 2 x 4 1 x 4 / 2 x 2.5 ~~es~~ AWG ~~ee~~ 1 x 12 / 2 x 14 1 x 14 / 2 x 14 1 x 10 / 2 x 12 1 x 12 / 2 x 14 

If the coil is operated for a prolonged period of time, adequate ventilation of the relays must be provided - suggested gap of 9 mm between adjacent relays. 

## **Coil specifications** 

## **DC version data** 

||Nominal<br>voltage<br>Coil<br>code<br>Operating range<br>ResistanceConsumption<br>Iat UN<br>UN<br>Umin<br>Umax<br>R<br>V<br>V<br>V<br>Ω<br>mA|
|---|---|
||12<br>**9**.012<br>10.8<br>13.2<br>27<br>440<br>24<br>**9**.024<br>21.6<br>26.4<br>105<br>230|
|**K**|48<br>**9**.048<br>43.2<br>52.8<br>440<br>110<br>110<br>**9**.110<br>99<br>121<br>2330<br>47|
||**AC version data**<br>Nominal<br>voltage<br>Coil<br>code<br>Operating range<br>ResistanceConsumption<br>Iat UN<br>UN<br>Umin<br>Umax<br>R<br>(50 Hz)<br>V<br>V<br>V<br>Ω<br>mA<br>8<br>**8**.008<br>6.8<br>8.8<br>4<br>800<br>~~oo~~|
||12<br>**8**.012<br>10.2<br>13.2<br>7.5<br>550|
||24<br>**8**.024<br>20.4<br>26.4<br>27<br>275<br>48<br>**8**.048<br>40.8<br>52.8<br>106<br>150<br>110<br>**8**.110<br>93.5<br>121<br>590<br>64<br>120<br>**8**.120<br>102<br>132<br>680<br>54<br>230<br>**8**.230<br>192<br>253<br>2500<br>28<br>240<br>**8**.240<br>204<br>264<br>2700<br>27.5<br>~~EE~~<br>~~ee~~<br>~~ee~~<br>~~ee ee es~~<br>~~a~~<br>~~eees~~|



**Number Sequence Type of steps** 1 2 3 4 ~~eee~~ 20.21 2 ~~Seti~~ 20.22 2 ~~Nth~~ 20.23 2 ~~|~~ RN | | 20.24 4 20.26 3 ~~Hae~~ 20.27 3 ~~RRA]~~ 20.28 4 

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**20 SERIES** 

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## **Wiring diagrams** 

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L<br>N<br>Example: 230 V AC supply voltage.<br>**----- End of picture text -----**<br>


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L<br>N<br>Example: 24 V AC supply voltage.<br>**----- End of picture text -----**<br>


## **Outline drawings** 

20.21 Screw terminal 

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20.22/24/26/27/28 Screw terminal 

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20.23 Screw terminal 

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**20 SERIES** 

## **Accessories** 

## **Module for use with illuminated push-buttons** 

## **Type 026.00** 

Sealed construction, 7.5 cm insulated flexible wire termination. 

## **Example of wiring diagram of type 026.00** 

This module is necessary when using between 1 and a maximum of 15 illuminated push buttons in the coil circuit (Each 1.5 mA max, 230 V AC). It must be connected in parallel to the coil of the relay. 

**Adaptor for panel mounting,** 17.5 mm wide 020.01 

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 020.01<br>**----- End of picture text -----**<br>


~~=~~ **Sheet of marker tags,** plastic, 24 tags, 9 x 17 mm 020.24 **020.24** 022.09 

**020.24 Separator for rail mounting,** plastic, 9 mm wide 022.09 ‘ **022.09** a ~~ctly~~ 

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