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We are EUCHNER ESM-BA301 product supplier in India

ORDER NO. 085613

Order number085613
Item designationESM-BA301
Gross weight0,21kg
European Article Number (EAN)4047048005990
Customs tariff number85364110

Basic device ESM-BA3.., 3 safety contacts, 1 auxiliary contact, cat. 4

  • ESM-BA.. Use up to category 4 according to EN ISO 13849-1
  • LED status indicators
  • 1-channel or 2-channel control
  • 3 redundant safety contacts
  • 1 auxiliary contact (monitoring contact)
  • Short circuit and earth fault/ground fault monitoring

Relay outputs

The outputs are electrically decoupled and of redundant design.

Connection options

By using suitable wiring, the following functions can be selected:

  • Relay start with automatic start or a start button.
  • Monitoring of downstream relays or contactors.
  • Simultaneity monitoring to monitor safety components over time.
  • Relay start using a monitored start button.
  • Short circuit monitoring to detect short circuits between the connecting cables and to shut down the outputs or prevent relay starting if necessary.
  • Earth fault/ground fault monitoring to detect short circuits between the connecting cables and earth or ground and to shut down the outputs or prevent relay starting if necessary.

Auxiliary contacts

The relays in the series ESM-BA3.. are available with electrically separate normally closed contacts and auxiliary contacts.

Connection terminals

Optionally, the ESM-BA… devices are also available as version with plug-in connection terminals.

Mechanical values and environment

Housing material
HousingPolyamide PA6.6
Net0,23 kg
Ambient temperature-15 … 40 °C 
Degree of protectionIP20
Mechanical life
operating cycles10 x 106
Contact materialAgSnO2
Mounting methodMounting rail 35mm according to DIN EN 60715 TH35
ConnectionConnection terminals
Length of control cable
With conductor cross-section 0.75mm21000 m
Safety contacts 13/14, 23/24, 33/34
Number of safety contacts3
Auxiliary contacts 41/42
Number of auxiliary contacts1

Electrical connection ratings

Operating voltage
AC/DC24 V -10% … +10% 
Rated insulation voltage Ui
AC250 V
Rated impulse withstand voltage Uimp
Leakage path/air gaps4 kV
Overvoltage category according to IEC EN 60664-13
Reverse polarity protection
On version UB =24V DC
Rated supply frequency50 … 60 Hz
Connection rating
at 24 V DC2,3 W
Degree of contamination (external, according to EN 60947-1)2
Connection cross-section0,14 … 2,5 mm² 
Test voltage
Control system/contacts2,5 kV
Control voltage
On S1124 V 18,6 … 26 V Start button
Control current
S11…S1460 mA
LED indicator2 status displays (green) for relays K1 and K2
Safety contacts 13/14, 23/24, 33/34
Type of output
NORelay contacts, floating and positively driven (redundant) 
Switching voltage
ACmax.250 V
DCmax.24 V
Switching current
at 24Vmin.5 mA
Cumulative currentmax.15 A For all contacts 
External contact fuses (safety circuit) according to IEC 60269-110A gG
Utilization category acc. to EN 60947-5-1
AC-153A , 250V
DC-133A , 24V
AC-128A ohmic load, 250V 
DC-128 A ohm resistive load, 40 V 
Breaking capacity according to UL8A 250V AC / 3A 24V DC per contact
Auxiliary contacts 41/42
Type of output
NCRelay contacts, floating
Utilization category acc. to EN 60947-5-1
AC-122A ohmic load, 250V
DC-122 A ohm resistive load, 40V
Breaking capacity according to UL2A, 250V AC / 2A, 24V DC per contact


In compliance withEN ISO 13849-1: 2015; EN 62061: 2005 + AC: 2010 + A1: 2013 + A2: 2015; EN 50581: 2012 (RoHS)

Reliability values according to EN ISO 13849-1

Performance LevelPL e 
PFHD1.2 x 10-8 
Number of switching cycles
≤ 0.1 A at 24 V DCmax.500000 1/Jahr
≤ 1 A at 24 V DCmax.350000 1/Jahr
≤ 2 A at 24 V DCmax.100000 1/Jahr
Mission time20 y 
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