2Specifications are subject to change without notice (05.02.03)
OFF-time period first
The OFF-time period starts
when power supply is applied.
At the end of the set OFF-time
period, the relay operates and
the ON-time period starts.
At the end of the set ON-time
period, the relay releases and
the OFF-time period starts
again.
This sequence continues until
power supply is interrupted.
S 1231
ON-time period first
The relay operates and the
ON-time period starts when
power supply is applied.
At the end of the set ON-time
period, the relay releases and
the OFF-time period starts.
At the end of the set OFF-time
period the relay operates and
the ON-time period starts
again.
This sequence continues until
power supply is interrupted.
S 1231 156 S 1231 166
Output SPDT relay DPDT relay
Basic electrical insulation 250 VAC (rms) (contact/electronics) 250 VAC (rms) (contacts/elec., contact/contact)
Contact ratings (AgCdO) µ (micro gap) µ (micro gap)
Resistive loads AC 1 10 A/250 VAC (2500 VA) 8 A/250 VAC (2000 VA)
DC 1 1 A/250 VDC (250 W) 0.4 A/250 VDC (100 W)
or 10 A/25 VDC (250 W) 4 A/25 VDC (100 W)
Small inductive loads AC 15 2.5 A/230 VAC 2.5 A/230 VAC
DC 13 5 A/24 VDC 5 A/24 VDC
Mechanical life ≥30 x 10
6
operations ≥30 x 10
6
operations
Electrical life AC 1 ≥2.5 x 10
5
operations (at max. load) ≥2.5 x 10
5
operations (at max. load)
Operating frequency ≤7200 operations/h ≤7200 operations/h
Insulation voltages
Rated insulation voltage ≥2.0 kVAC (rms) (contact/electronics) ≥2.0 kVAC (rms) (contact/electronics)
Rated transient protection volt. 4 kV (1.2/50 µs) (contact/electronics) (IEC 60664) 4 kV (1.2/50 µs) (contact/electronics) (IEC 60664)
Power-on delay ≤200 ms
Power-off delay ≥200 ms
Indication for
Power supply ON LED, green
Output ON LED, red
Environment IP 20 B
Pollution degree 2 (IEC 60664)
Operating temperature -20 to +50°C (-4 to +122°F)
Storage temperature -50 to +85°C (-58 to +185°F)
Weight
AC supply 200 g
DC supply 125 g
Approvals UL, CSA
CE-marking Yes
OFF-time first
Power supply
S 1231 156, S 1231 166
ON-time first
Power supply
S 1231 156, S 1231 166
Sockets◊S 411
Hold down spring◊HF
Mounting rack SM 13
Socket covers BB 4
Front mounting bezel FRS2
Potentiometer lock PL 2
For further information refer to "Accessories".
For other AC/DC voltages refer to "General Information".
Output Specifications
General Specifications Mode of Operation
AccessoriesWiring Diagram