Power supply

N 262D31

N 262D51

KNX bus voltage

DC 24 V (DC 21...30 V)

DC 24 V (DC 21...30 V)

KNX bus current

9.5 mA

12.5 mA

Power loss (internal consumption)

0.2 W

0.3 W

Inputs for potential-free contacts

N 262D31

N 262D51

Number of inputs

4

8

Determining the switching state of a potential-free contact connected to an input via voltage pulses generated in the device:

Pulse voltage if contact is open:

20 Vss

Pulse current if contact is closed:

0.66 Ass

Input signal delay until first bus telegram

After the contact is closed:

60 ms

After the contact is opened:

60 ms

Contact ON time:

100 ms

Contact OFF time

100 ms

Debounce time (configurable)

Min. (= from) 30 ms

Max. (= to) 300 ms

Max. detectable switching frequency:

5 Hz

Max. length of connecting lines with pairs of twisted cables:

100 m

Max. length NYM connection cable:

100 m

Power loss

N 262D31

N 262D51

Maximum device power loss

0.25 W

0.35 W

Mechanical data

N 262D31

N 262D51

Housing material

Plastic

Plastic

Dimensions

4 HP (1 HP = 18 mm)
Dimensions

8 HP (1 HP = 18 mm)
Dimensions

Weight (device)

140 g

250 g

Fire load

4 MJ

6 MJ

Environmental conditions

Environmental category (as per EN 60721-3-3)

Class 3k5

Ambient temperature in operation

-5 °C...+45 °C (23 °F...113 °F)

Storage temperature

-20 °C...+70 °C (-4 °F...158 °F)

Transport temperature

-25 °C...+70 °C (-13 °F...158 °F)

Relative humidity
(non-condensing)

5 %...95 %

Protection settings

Degree of pollution (according to IEC 60664-1)

2

Overvoltage category (according to IEC 60664-1)

III

Protection type IP

IP20

Electrical safety, bus

Yes

Electrical safety, device complies with

EN 50428

EMC requirements, device complies with

EN 50428

Test mark

CE marking

Yes

KNX approval mark

Yes

UL approval mark

No

EAC marking

Yes

RCM marking

Yes

Reliability

N 262D31

N 262D51

Failure rate (at 40°C)

341 fit

565 fit