1SVR500020R0000

**Data sheet** 

## Electronic timer CT-MFD.12 

## Multifunctional with 1 c/o (SPDT) contact 

## The CT-MFD.12 is a multifunctional electronic 

time relay. It is from the CT-D range. 

With their MDRC profile and a width of only 17.5 mm, the CT-D range timers are ideally suited for installation in distribution panels as well as for industrial applications where compact dimensions are required. 

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2CDC 251 089 F0006<br>**----- End of picture text -----**<br>


## Approvals 

## Characteristics 

- Rated control supply voltage 24-48 V DC, 24-240 V AC 

- Multifunction timer with 7 timing functions: ON-delay, OFF-delay with auxiliary voltage, impulse-ON, impulse-OFF with auxiliary voltage, flasher starting with ON, flasher starting with OFF, pulse former 

A UL 508, CAN/CSA C22.2 No.14 R EAC E CCC L RMRS 

- 7 time ranges (0.05 s - 100 h) in one device 

- Control input: voltage-related triggering, polarized, capable of switching a parallel load 

- Light-grey enclosure in RAL 7035 

Marks 

a CE b RCM 

- 1 c/o (SPDT) contact (250 V / 6 A) 

- Width of only 17.5 mm (0.689 in) 

- 2 LEDs for the indication of operational states 

## Order data 

|Order data|||||
|---|---|---|---|---|
|Type|Rated control supply voltage|Time range|Output|Order code|
|CT-MFD.12|24-48 V DC, 24-240 V AC|0.05 s - 100 h|1 c/o (SPDT) contact|1SVR 500 020 R0000|



Functions 

Operating controls 

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1  Rotary switch for the preselection of the time range<br>**----- End of picture text -----**<br>


- || 2 Potentiometer with direct reading scale for the fine adjustment of the time delay 

- 3 Rotary switch for the selection of the timing function 

- ." 4 Indication of operational states 

   - U: green LED 

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5<br>4€<br>1<br>om i<br>ooh. ‘ath 00m<br>4<br>2<br>gr<br>3<br>. a ai Q J<br>2CDC 251 089 F0006<br>**----- End of picture text -----**<br>


- V control supply voltage applied W timing R: yellow LED V output relay energized 

- 5 Circuit diagram 

## Application 

With their structural form and their width of only 17.5 mm, the CT-D range timers are ideally suited for installation in distribution panels. 

Multifunction timers are ideally suited for service and maintenance applications, because one device can replace a number of time relays with different functions, voltage and time ranges. This reduces inventory and saves money. 

## Operating mode 

The CT-MFD.12 has 1 c/o (SPDT) contact and provides 7 timing functions. The function is rotary switch selectable on the front of the unit. Each function is indicated by an international function symbol. One of 7 time delay ranges, from 0.05 s to 100 h, can be selected with another rotary switch. The fine adjustment of the time delay is made via an internal potentiometer, with a direct reading scale, on the front of the unit. 

2 - Electronic timer CT-MFD.12 | Data sheet 

Function descriptions / diagrams 

## A ON-delay 

This function requires continuous control supply voltage for timing. Timing begins when control supply voltage is applied. The green LED flashes during timing. When the selected time delay is complete, the output relay energizes and the flashing green LED turns steady. If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. 

Control input A1-Y1/B1 is disabled when this function is selected. 

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A1-A2<br>15-18<br>15-16<br>green LED<br>t < t<br>t = adjusted time delay<br>2CDC 252 035 F0207<br>**----- End of picture text -----**<br>


## B OFF-delay with auxiliary voltage 

This function requires continuous control supply voltage for timing. 

If control input A1-Y1/B1 is closed, the output relay energizes immediately. If control input A1-Y1/B1 is opened, the time delay starts. The green LED flashes during timing. When the selected time delay is complete, the output relay de-energizes and the flashing green LED turns steady. 

If control input A1-Y1/B1 recloses before the time delay is complete, the time delay is reset and the output relay does not change state. Timing starts again when control input A1-Y1/B1 re-opens. 

If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. 

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A1-A2<br>A1-Y1/B1<br>15-18<br>15-16<br>green LED<br>t < t<br>t = adjusted time delay<br>2CDC 252 036 F0207<br>**----- End of picture text -----**<br>


## CA Impulse-ON 

This function requires continuous control supply voltage for timing. 

The output relay energizes immediately when control supply voltage is applied and de-energizes after the set pulse time is complete. The green LED flashes during timing. When the selected pulse time is complete, the flashing green LED turns steady. 

If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. 

Control input A1-Y1/B1 is disabled when this function is selected. 

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A1-A2<br>15-18<br>15-16<br>green LED<br>t < t<br>t = adjusted pulse time<br>2CDC 252 037 F0207<br>**----- End of picture text -----**<br>


Data sheet | Electronic timer CT-MFD.12 - 3 

CB Impulse-OFF with auxiliary voltage 

This function requires continuous control supply voltage for timing. 

If control supply voltage is applied, opening control input A1-Y1/B1 energizes the output relay immediately and starts timing. The green LED flashes during timing. When the selected pulse time is complete, the output relay de-energizes and the flashing green LED turns steady. 

Closing control input A1-Y1/B1, before the time delay is complete, de-energizes the output relay and resets the time delay. 

If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. 

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A1-A2<br>A1-Y1/B1<br>15-18<br>15-16<br>green LED<br>t < t<br>t = adjusted pulse time<br>2CDC 252 038 F0207<br>**----- End of picture text -----**<br>


## DA Flasher, starting with ON 

Applying control supply voltage starts timing with symmetrical ON & OFF times. The cycle starts with an ON time first. The ON & OFF times are displayed by the flashing green LED, which flashes twice as fast during the OFF time. 

If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. Control input A1-Y1/B1 is disabled when this function is selected. 

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A1-A2<br>15-18<br>15-16<br>green LED<br>t  t<br>t = adjusted flashing time<br>2CDC 252 031 F0207<br>**----- End of picture text -----**<br>


## DB Flasher, starting with OFF 

Applying control supply voltage starts timing with symmetrical ON & OFF times. The cycle starts with an OFF time first. The ON & OFF times are displayed by the flashing green LED, which flashes twice as fast during the OFF time. If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. Control input A1-Y1/B1 is disabled when this function is selected. 

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A1-A2<br>15-18<br>15-16<br>green LED<br>t  t<br>t = adjusted flashing time<br>2CDC 252 032 F0207<br>**----- End of picture text -----**<br>


4 - Electronic timer CT-MFD.12 | Data sheet 

## H Pulse former 

This function requires continuous control supply voltage for timing. 

Closing control input A1-Y1/B1 energizes the output relay immediately and starts timing. Operating the control contact switch A1-Y1/B1 during the time delay has no effect. The green LED flashes during timing. When the selected ON time is complete, the output relay de-energizes and the flashing green LED turns steady. After the ON time is complete, it can be restarted by closing control input A1-Y1/B1. 

If control supply voltage is interrupted, the output relay de-energizes and the time delay is reset. 

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A1-A2<br>A1-Y1/B1<br>15-18<br>15-16<br>green LED<br>t t<br>t = adjusted pulse time<br>2CDC 252 039 F0207<br>**----- End of picture text -----**<br>


## Electrical connection 

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A1-A2 Rated control supply voltage Us 24-48 V DC or 24-240 V AC<br>A1  15  Y1/B1 A1-Y1/B1 Control input<br>15-16/18 1 c/o (SPDT) contact<br>Y1/<br>B1 A1 15<br>A2  16  18<br>18  16  A2<br>Connection diagram<br>2CDC 252 114 F0b06<br>**----- End of picture text -----**<br>


## Wiring instructions 

Parallel load to control input possible / allowed 

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L(+)<br>A1 Y1/B1<br>A2<br>N(-)<br>2CDC 252 102 F0b06<br>**----- End of picture text -----**<br>


Data sheet | Electronic timer CT-MFD.12 - 5 

## Technical data 

Data at Ta = 25 °C and rated values, unless otherwise indicated 

## Input circuits 

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Supply circuit A1-A2<br>Rated control supply voltage Us 24-240 V AC, 24-48 V DC<br>Rated control supply voltage Us tolerance -15...+10 %<br>Typical current / power consumption 24 V DC 14 mA / 0.3 W<br>115 V AC 52 mA / 1.3 VA<br>230 V AC 60 mA / 2.4 VA<br>Rated frequency DC; 50/60 Hz<br>Frequency range AC 47-63 Hz<br>Power failure buffering time min. 20 ms<br>Release voltage > 10 % of the min. rated control supply voltage Us<br>Control circuit<br>Control input, control function A1-Y1/B1 start timing external<br>Kind of triggering voltage-related triggering<br>Resistance to reverse polarity yes<br>Polarized yes<br>Capable of switching a parallel load yes<br>Maximum cable length to the control inputs 50 m - 100 pF/m<br>Minimum control pulse length 20 ms<br>Control voltage potential see rated control supply voltage Us<br>Current /power consumption of the control  24 V DC 3.9 mA / 0.1 W<br>input  115 V AC 23.0 mA / 0.3 VA<br>230 V AC 26.0 mA / 0.7 VA<br>Timing circuit<br>Kind of timer Multifunction timer ON-delay, OFF-delay with auxiliary voltage, Impulse-ON, Impulse-OFF with<br>auxiliary voltage, Flasher, starting with ON, Flasher, starting with OFF,<br>Pulse former<br>Time ranges 0.05 s - 100 h 0.05-1 s, 0.5-10 s, 5-100 s, 0.5-10 min, 5-100 min, 0.5-10 h, 5-100 h<br>Recovery time < 50 ms<br>Repeat accuracy (constant parameters) D t < ± 0.5 %<br>Accuracy within the rated control supply voltage tolerance D t < 0.005 % / V<br>Accuracy within the temperature range D t < 0.06 % / °C<br>Setting accuracy of time delay ± 10 % of full-scale value<br>User interface<br>Indication of operational states<br>Control supply voltage / timing U: green LED V: control supply voltage applied<br>W: timing<br>Relay status R: yellow LED V: output relay energized<br>**----- End of picture text -----**<br>


6 - Electronic timer CT-MFD.12 | Data sheet 

## Output circuit 

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Kind of output 15-16/18 relay, 1 c/o (SPDT) contact<br>Contact material Cd-free<br>Rated operational voltage Ue 250 V<br>Minimum switching voltage / Minimum switching current 12 V / 100 mA<br>Maximum switching voltage / Minimum switching current see load limit curve / see load limit curve<br>Rated operational current Ie AC-12 (resistive) at 230 V 6 A<br>AC-15 (inductive) at 230 V  3 A<br>DC-12 (resistive) at 24 V  6 A<br>DC-13 (inductive) at 24 V  2 A<br>AC rating (UL 508) utilization category<br>B 300<br>(Control Circuit Rating Code)<br>max. rated operational voltage 300 V AC<br>maximum continuous thermal current at B 300 5 A<br>max. making/breaking apparent power at B 300 3600 VA / 360 VA<br>Mechanical lifetime 30 x 10 [6]  switching cycles<br>Electrical lifetime AC-12, 230 V, 4 A 0.1 x 10 [6]  switching cycles<br>Maximum fuse rating to achieve n/c contact 6 A fast-acting<br>short-circuit protection n/o contact 10 A fast-acting<br>**----- End of picture text -----**<br>


## General data 

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MTBF on request<br>Duty time 100 %<br>Dimensions (W x H x D) product dimensions 17.5 x 70 x 58 mm (0.69 x 2.76 x 2.28 in)<br>packaging dimensions 89 x 65 x 20 mm (3.50 x 2.56 x 0.79 in)<br>Weight 0.06 kg (0.132 lb)<br>Mounting DIN rail (IEC/EN 60715), snap-on mounting without any tool<br>Mounting position any<br>Minimum distance to other units, horizontal not necessary<br>normal operation mode vertical not necessary<br>Degree of protection housing IP50<br>terminals IP20<br>**----- End of picture text -----**<br>


## Electrical connection 

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Connecting capacity fine-strand with wire end ferrule 2 x 0.5-1.5 mm [2]  / 1 x 0.5-2.5 mm [2]  (2 x 20-16 AWG / 1 x 20-14 AWG)<br>fine-strand without wire end ferrule 2 x 0.5-1.5 mm [2]  / 1 x 0.5-2.5 mm [2]  (2 x 20-16 AWG / 1 x 20-14 AWG)<br>rigid 2 x 0.5-1.5 mm [2]  / 1 x 0.5-4 mm [2]  (2 x 20-16 AWG / 1 x 20-12 AWG)<br>Stripping length 7 mm (0.28 in)<br>Tightening torque 0.5-0.8 Nm (4.43-7.08 lb.in)<br>Environmental data<br>Ambient temperature ranges operation -20...+60 °C (-4...+140 °F)<br>storage -40...+85 °C (-40...+185 °F)<br>Climatic class (IEC/EN 60068-2-30) 3k3<br>Relative humidity range 25 % to 85 %<br>Vibration, sinusoidal (IEC/EN 60068-2-6) 20 m/s [2] , 10 cycles, 10...150...10 Hz<br>Shock, half-sine (IEC/EN 60068-2-27) 150 m/s [2] , 11 ms<br>**----- End of picture text -----**<br>


Data sheet | Electronic timer CT-MFD.12 - 7 

Isolation data 

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Rated insulation voltage Ui input circuit / output circuit 300 V<br>output circuit 1 / output circuit 2 n/a<br>Rated impulse withstand voltage Uimp between all isolated circuits  4 kV; 1.2/50 μs<br>Power-frequency withstand voltage between all isolated circuits  2.5 kV, 50 Hz, 60 s<br>(test voltage)<br>Basic insulation (IEC/EN 61140) input circuit / output circuit 300 V<br>Protective separation   input circuit / output circuit<br>250 V<br>(IEC/EN 61140, EN 50178)<br>Pollution degree 3<br>Overvoltage category III<br>Standards / Directives<br>Standards IEC/EN 61812-1<br>Low Voltage Directive 2014/35/EU<br>EMC directive 2014/30/EU<br>RoHS Directive 2011/65/EC<br>Electromagnetic compatibility<br>Interference immunity to IEC/EN 61000-6-2<br>electrostatic discharge IEC/EN 61000-4-2 Level 3 (6 kV / 8 kV)<br>radiated, radio-frequency,  IEC/EN 61000-4-3 Level 3 (10 V/m)<br>electromagnetic field<br>electrical fast transient / burst  IEC/EN 61000-4-4 Level 3 (2 kV / 5 kHz)<br>surge IEC/EN 61000-4-5 Level 3 (2 kV L-L)<br>conducted disturbances, induced by   IEC/EN 61000-4-6 Level 3 (10 V)<br>radio-frequency fields<br>Interference emission IEC/EN 61000-6-3<br>high-frequency radiated IEC/CISPR 22, Class B<br>EN 55022<br>high-frequency conducted IEC/CISPR 22, Class B<br>EN 55022<br>**----- End of picture text -----**<br>


8 - Electronic timer CT-MFD.12 | Data sheet 

Technical diagrams 

## Load limit curves 

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resistive load resistive load<br>AC current [A] DC current [A]<br>AC load (resistive)  DC load (resistive)<br>1.0<br>0.9<br>0.8<br>0.7 250 V<br>resistive load<br>0.6<br>0.5<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0<br>cos ϕ Switching current [A]<br>AC voltage [V] DC voltage [V]<br>2CDC 252 044 F0207 2CDC 252 045 F0207<br>Derating factor F Switching cycles<br>2CDC 252 124 F0206 2CDC 252 123 F0206<br>**----- End of picture text -----**<br>


Derating factor F for inductive AC load 

Contact lifetime 

Data sheet | Electronic timer CT-MFD.12 - 9 

Dimensions 

## in mm and _inches_ 

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58 2.28“<br>0.69“ 0.2“<br>17,5 5 43,4 1.71“<br>2.76“ 1.77“<br>70 45<br>2CDC 252 131 F0b06<br>**----- End of picture text -----**<br>


## Further documentation 

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Document title Document type Document number<br>Electronic products and relays Technical catalogue 2CDC 110 004 C02xx<br>CT-D range Instruction manual 1SVC 500 010 M1000<br>**----- End of picture text -----**<br>


You can find the documentation on the internet at www.abb.com/lowvoltage 

-> Automation, control and protection -> Electronic relays and controls -> Electronic timers. 

## CAD system files 

- You can find the CAD files for CAD systems at http://abb-control-products.partcommunity.com -> Low Voltage Products & Systems -> Control Products -> Electronic Relays and Controls. 

10 - Electronic timer CT-MFD.12 | Data sheet 

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You can find the address of your local sales organisation on the ABB home page http://www.abb.com/contacts -> Low Voltage Products and Systems 

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