3UG3501 datasheet(55/114 Pages) ETC2

55 / 114 page

3RP, 7PV Timing Relays

7/55

Siemens LV 1 T · 2006

3RP20 timing relays, 45 mm

■Overview

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"

3RP20 timing relay, width 45 mm

Accessories

Label set for marking the multifunction relay

■Function

• 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

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.

3RP20 05 with two changeover contacts

Corresponds to the functions of 3RP15 05-.B.

Parallel load on start input

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

NSB00895

NSB00896

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