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Siemens 7LF4521-0

Weekly time switch Profi digital 230 V 16A 1-channel 2MW

MPN: 7LF4521-0
Category: 7LF4 Digital Time Switches

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What is the Siemens 7LF4521-0?

weekly time switch Profi digital 230 V 16A 1-channel 2MW

Specifications

Model

product brand name	SENTRON
product designation	Digital time switch
design of the product	Profi
design of the switching function	CO contact

General technical data

principle of operation radio-controlled	No
principle of operation line-synchronous	Yes
principle of operation quartz-controlled	No
accuracy per day	0.1 s
shortest switching time interval of channel 1	1 s

Voltage

control voltage at AC rated value — minimum	250 V
control voltage at AC rated value — maximum	253 V
overvoltage category according to IEC 61010-1	III

Supply voltage

operating voltage at AC rated value	250 V
type of voltage of the supply voltage	AC
supply voltage frequency maximum	60 Hz

Protection class

protection class IP

IP20

Breaking Capacity

switching capacity current at AC at 250 V rated value

16 A

Dissipation

power loss [W] for rated value of the current at AC in hot operating state per pole

1 W

Product details

product feature external switch input	No
product feature floating switching contact	Yes

Product function

product function — 60 min time program	Yes
product function — Astro program	No
product function — automatic daylight-saving adjustment	Yes
product function — operating hours counter	Yes
product function — direct operation	Yes
product function — holiday time program	Yes
product function — pulse program	Yes
product function — annual time program	No
product function — switching preselection	Yes
product function — 24 hr time program	Yes
product function — text guidance in display	Yes
product function — weekly time program	Yes
product function — random time program	Yes
product function — cyclical time program	Yes

Number

number of terminals with cross-head screw	1
number of channels	1
number of memory slots	56
connectable conductor cross-section in main circuit for rigid conductor — minimum	1.5 mm²
connectable conductor cross-section in main circuit for rigid conductor — maximum	4 mm²
connectable conductor cross-section in main circuit for flexible conductor with core end processing maximum	2.5 mm²

Mechanical Design

height	83 mm
width	36 mm
depth	70 mm
number of modular width units	2
fastening method	DIN rail
Net Weight	171 g

Environmental conditions

ambient temperature during operation — minimum	-20 °C
ambient temperature during operation — maximum	55 °C
ambient temperature during storage — minimum	-20 °C
ambient temperature during storage — maximum	60 °C

Downloads & documentation

Official documents from Siemens, downloaded directly from the manufacturer.

Data sheets & manuals

Product data sheet 7LF4521-0PDF

7LF4521-0: frequently asked questions

When can 7LF4521-0 be shipped?

7LF4521-0 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 7LF4521-0 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 7LF4521-0 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 7LF4521-0, subject to availability and destination.