B121220006 datasheet(1/2 Pages) ETC2

Part #	B121220006

Description	Timers Delay on Release

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Specifications are subject to change without notice (25.10.99)

1

Timers

Mono-function, plug-in, delay

on release, miniature time re-

lays up to 60 s covering 2

individual time ranges. These

economical timers are often

used to switch on an exhaust

fan and keep it running for a

certain period of time after

disconnection of power sup-

ply.

Plug

Output

Time ranges

Supply: 24 VAC

Supply: 120 VAC

Supply: 220 VAC

Supply: 24 VDC

Circular

SPDT

0.15 -

6 s

B 128 024 006

B 128 120 006

B 128 220 006

B 128 724 006

8 pins

1.5 - 60 s

B 128 024 060

B 128 120 060

B 128 220 060

B 128 724 060

Circular

SPDT

0.15 -

6 s

B 121 024 006

B 121 120 006

B 121 220 006

B 121 724 006

11 pins

1.5 - 60 s

B 121 024 060

B 121 120 060

B 121 220 060

B 121 724 060

Time ranges

0.15 -

6 s

1.5

-

60 s

Time range accuracy

0 to +20% on max.

min. actual time

≤ min.

set time

Repeatability deviation

≤ 1%

Time variation

Within rated power supply

≤ 0.05%/V

and ambient temperature

≤ 0.2%/°C

Reset

Power supply interruption

Time and/or relay

≥ 500 ms

Output

SPDT relay

Basic electrical insulation

250 VAC (rms)

(contact/electronics)

Contact ratings (AgCdO)

µ (micro gap)

Resistive loads

AC 1

10 A/250VAC (2500 VA)

DC 1

1 A/250 VDC (250 W)

or

10 A/25 VDC (250 W)

Small inductive loads AC 15

2.5 A/230 VAC

DC 13

5 A/24 VDC

Mechanical life

≥ 30 x 106 operations

Electrical life

AC 1

≥ 2.5 x 105 operations

(at max. load)

Operating frequency

≤ 7200 operations/h

Insulation voltages

Rated insulation voltage

≥ 2.0 kVAC (rms) (cont./elec.)

Rated transient protection volt. 4 kV (1.2/50 µs) (cont./elec.)

(IEC 60664)

Function

Output

Type

Power supply

Time range

• Time ranges: 0.15 s to 60 s

• Automatic start after drop out of power supply

• Knob-adjustable time within range

• Repeatability deviation:

≤ 1%

• Output: 10 A SPDT relay

• Plug-in type module

• Scantimer housing

• LED-indication for supply on

• AC or DC power supply

Delay on Release

Types B 128, B 121

Ordering Key

Product Description

Type Selection

Time Specifications

Output Specifications

B 128 220 006

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