380 / 582
BETA Switching
Timers
Product overview
9/2
Siemens ET B1 · 10/2008
9
■
Overview
Devices
Page Field of application
Standards
Used in
Non-residential
buildings
Residential
buildings
Industry
7
LF4 digital time switches
9/3
Minute-precise switching of devices and
system components in day, week and year
programs. Unique due to the wide variety of
functions offered by the Mini and Top versions;
for PC programming Astro, Profi and Expert
IEC 60730-1 and
IEC 60730-2-7
EN 60730-1 and
EN 60730-2-7
VDE 0631 Part 1 and
Part 2-7
UL 60730
✓ ✓ ✓
7
LF5 mechanical time
switches
9/11
Accurate and 15-minute switching accuracy.
With automatic time setting during commissioning
and automatic switching to daylight savings.
IEC 60730-1 and
IEC 60730-2-7
EN 60730-1 and
EN 60730-2-7
VDE 0631 Part 1 and
Part 2-7
UL 60730
✓ ✓ ✓
7
LF6, 5TT1 3 timers for
buildings
9/16
Lighting controls with stairwell lighting timers
ensure the safe use of stairwells and save
energy. Expanded applications for common
rooms and garages, as well as the time
switching of ventilators and fluorescent lamps.
IEC 60699
EN 60669, DIN 18015
✓ ✓
5
TT3 18 timers for industrial
applications
9/21
Multifunctional, delay, wiper, flashing and
OFF-delay timers in control circuits expand the
use of distribution boards in both small and
large plants.
IEC 60255
EN 60255
✓
© Siemens AG 2008