3UG4622-1AW30 Datasheet, PDF (55/114 Pages) List of Unclassifed Manufacturers – Monitoring and Control Devices

3RP, 7PV Timing Relays
3RP20 timing relays, 45 mm
■ Overview
■ Function
Standards
The timing relays comply with:
• EN 60721-3-3 "Environmental conditions"
• EN 61812-1/DIN VDE 0435 Part 2021 "Solid-state relays,
timing relays"
• EN 61000-6-2 and EN 61000-6-4 "Electromagnetic
compatibility"
• EN 60947-5-1; (VDE 0660 Part 200) "Low-voltage controlgear,
switchgear and systems – Electromechanical controlgear"
• EN 61140 "Safe electrical isolation"
• Changes to the time setting ranges and the functions must be
carried out in the de-energized state
• Start input B1 or B3 must only be triggered when the supply
voltage is applied
• The same potential must be applied to A1 and B1 or A3 and
B3. With two-voltage version, only one voltage range must be
connected
• The activation of loads parallel to the start input is not
permissible when using AC (see diagrams)
• Surge suppression is integrated in the timing relay. This
prevents the generation of voltage peaks on the supply
voltage when the relay is switched on and off. No additional
damping measures are necessary
3RP20 timing relay, width 45 mm
LED for indicating
"Time relay excited"
(left)
LED for indicating
"Relay switched"
(right)
Time setting
range selector
switch
Device labeling
plate
Function
switch
Time setting
range adjuster,
analog
NSB0_01424
Timing relay with multifunction
The functions can be adjusted by means of rotary switches.
Indicator labels can be used to adjust different functions of the
3RP20 05 timing relay clearly and unmistakably.
The corresponding labels can be ordered as an accessory.
The same potential must be applied to terminals A. and B..
3RP20 05 with one changeover contact
Corresponds to the functions of 3RP15 05-.A.
Accessories
Label set for marking the multifunction relay
3RP20 05 with two changeover contacts
Corresponds to the functions of 3RP15 05-.B.
Parallel load on start input
L1
S1
A1
K2
N ^A2
B1
K1
NSB00895
L1
K1 S1
A1
K2
N ^A2
B1
K1
NSB00896
Siemens LV 1 T · 2006
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