WEG Electric RW-E Series Product Flyer

RW-E Series – Solid-State Overload Relays

High Performance and Reliability

RW-E Series Solid-State Overload Relays

High performance and protection solutions for electric
motors in the event of overload or phase failure. WEG
offers 3-pole solid-state overload relays up to 840A with
a wide range of accessories. RW series overload relays
can be mounted directly on WEG contactors up to 105A
and mounted separately from 112A to 840A.

Standard Features

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Adjustable trip class 10, 20, 30

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Trip indication - Flag

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Wide (5:1) ratio adjustable current setting

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Isolated N.C “Trip” and N.O “Alarm” auxiliary contacts

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Overload/Phase imbalance/phase loss protection

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Selectable Manual/Auto/Remote RESET button

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Low energy consumption and power dissipation

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Ambient temperature compensation from -4°F to +140°F

UL File No. E189202

Wide Range of Accessories

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1. Panel mounting brackets

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2. External RESET pushbuttons

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3. Connector links

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4. Phase barriersSpare lugs

1 2 3 4

Trip class dip-switch

WEG Electric Corp., Duluth, GA

Thermal Overload Relays - RW-E Series

360°

360°

360°

360°

Suitable for Great Variety of Applications

The solid-state overload relays RW_E are suitable to protect motors in a wide range of industrial applications
including those where long starting time is required. This way, motors on low, medium or heavy duty applications
can be properly protected just by selecting the proper trip class (10, 20 or 30 according to IEC 60947-4-1) in the
DIP-switches.

Additionally, the microprocessed electronic circuits of RW_E are temperature compensated according to IEC
60947-4-1, which means that throughout the temperature range of -20 °C up to +60 °C, the tripping point is not
affected and it performs consistently without undesirable tripping.

The RW_E also features thermal memory which assures that the heating and cooling effects of motors are modeled
and proper protection is guaranteed even after downtime periods.

RW and RW-E Tripping Characteristics

t(s)

10,8 00

10,000

5,000

2,000

1,000

Tripping time

500

200

100

Trip class

10 - Tp <2h Tp <4min 4 <Tp ≤10s

20 - Tp <2h Tp <8min 6 <Tp ≤20s

30 - Tp <2h Tp <12min 9 <Tp ≤30s

50

1.05 x Ir 1.2 x Ir 1.5 x Ir 7.2 x Ir

Multiples of current setting

20

10

5

2

1

1.0 5 1.5 2 3 4 5 6 7 8 9 10

Ie x Current settin g

Trip class 3 0

Trip class 20

Trip class 10

(A)

Mounting Position

US.RW-E.Solid.State.Overload.Relay.2.2020 - 50098644