Siemens 7LF4521-0 Digital Time Switch 230 VAC 250 V/AC/16

Siemens
Order Code:

55-7231

Brand: Siemens MPN: 7LF45210 EAN-13: 4001869335582
Qty Was Unit Price (Ex VAT)
1+ £149.04 £148.00
Price per unit {{ this._page.IncVat ? 'Inc' : 'Ex' }} VAT
3 in stock, despatched in 4 working days

The Siemens 7LF4521-0 is a DIN Rail Single Channel Digital Time Switch with a diverse range of functions that make it simple to use. The timer is text-led, and the programming can be performed in six languages: German, English, French, Italian, Spanish and Dutch.

It is supplied with the time, date and summer/winter conversion for Central Europe installed before delivery so that you can begin programming immediately using up to 56 memory slots. The display contrast is adjustable to improve visibility in difficult lighting conditions.


  • Programmable digital time switch
  • Dimensions: 83(H) x 64(L) x 36(W)mm
  • Operating voltage: 230V AC
  • Output rating (LOV): 16A/250V
  • Number of channels: 1 x relay
  • Timer features: Daylight savings, backlit display, RND mode, holiday program mode, impulse change-over
  • USB Adaptor available: see order code 55-2485
  • Timer type: DIN rail mount timer
  • Manufacturer part no.: Siemens 7LF4521-0
Supply Voltage N/A
Number of Channels 1 x relay
24 h program true
60 min program true
Accuracy per day 0.1s
Annual program false
Astro program false
Automatic switching summer/winter time true
Autonomy in hours N/A
Autonomy in years N/A
Contact Type N/A
Cycle program true
Degree of protection (IP) IP20
Depth 70mm
Display Digital
External programming N/A
External push button input false
Frequency supply voltage 50 - 60Hz
GPS (global positioning system) N/A
Height 83mm
Holiday program true
Hour meter true
Impulse program true
Mains synchronous true
Max. switching power LED N/A
Measuring functions Power current
Mounting method DIN rail
Nominal switching current at 250 V AC 16A
Number of Contacts 2
Number of memory locations 56
Operating Voltage 250V
Output signal N/A
Potential free switch contact true
Quartz controlled false
Radio-controlled false
Radio-controlled (DCF77) N/A
Random program true
Shortest switching time channel 1 0.016666666min
Shortest switching time channel 2 N/A
Suitable for manual operation true
Switching preselection true
Text guidance in display true
Units of measurement kWh
Voltage type (supply voltage) AC
Weekly program true
Weight 180g
Width 36mm
Width in number of modular spacings 2
With memory card N/A

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