XM1 Motor protection

Product detail

Product code:
Request a quote Select options below to request a price.

Product Information

Download Area

Available options

Documentation (Brochures & Manuals)

The XM1 relay of the easy PROFESSIONAL LINE is a digital relay for electrical motor protection. Besides its standard applications, the XM1 is mainly used for motors where normal CBs do not guarantee sufficient protection.

XM1 Connection with 3 phase CTs
Connection with 3 phase CTs, clockwise rotating field (L1‑L2‑L3), ensure correct phase sequence!

XM1 Connection with 2 phase CTs
Connection example with 2 phase CTs and 1 core balance CT

Protection Settings

Parameter Setting Range
I> used for Thermal Replica
I>> 10⋅I B
t6x 0 … 30 s
I B 0.6 … 1.2 I n
I E> 10% I n … 50% I n
I < 40% I B … 80% I B
Unbalanced Load I 2> fixed to I Motor > 20% I B
(Tripping delay: see manual.)
Locked Rotor I > fixed to 350% I B
(Tripping delay = 1 s.)
Cooling-down constant fixed as follows:
1× warming-up time constant quantity after overload alarm;
0.5× warming-up time constant quantity without alarm

Auxiliary Voltage

Voltage supply via wide-range power supply unit:

Auxiliary voltage range

19 … 390 V DC or

36 … 275 V AC

Power consumption

approx. 4 W

Benefits of the Professional Line

  • Fast DIN rail mounting    easy and fast mounting
  • Sealable plastic covers    safe (see if anybody has broken the seal)
  • Super easy settings via front buttons    fast without computer
  • LED and output relays fault indication    easy to find out what has happened
  • Compact form factor    fits in small spaces
  • IT security    no way to attack via Ethernet
  • Robust and reliable    well proven reliable quality
  • Wide Range Power Supply    don’t worry about available supply voltage
  • Integrated Self-Test Procedure (via button)    fast and easy checks: relays, LEDs
  • For all relays except XD1-G and except XRI...: optional interface adapter XRS1 (order code XRS1A or XRS1*);

    for all XRI... [except XD1-G]: optional adapter RS485 to USB (order code RSC2485USB1):

      easy doing high precision settings via Windows ® PC software »Smart view«


  • Start Cycle Supervision

  • Overload

  • Jam / Locked Rotor

  • Underload

  • Unbalanced Load

  • Number of Starts, Counters,…

  • Keeping motor load under the Thermal Damage Curve

Inputs and Outputs
Current transformer inputs 3
Output relays 2
Watchdog relay 1
Protection ANSI
Time overcurrent protection 50/51
Earth fault protection 50N/51N
Negative sequence protection 46
Motor protection: locked rotor 51
Motor protection: undercurrent 37
Motor protection: thermal protection 49
Mounting Type
Housing suitable for DIN rail mounting

© 2022 SEG ELECTRONICS GMBH | All rights reserved
webstránky | webdesign | eshopy | bajan.sk
Website uses cookies
We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it. Learn More