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EUCHNER – More than safety.
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TX3B-A024MC1991 (Order no. 085391)

Safety switch TX, escape release

  • Auxiliary release on the front
  • Escape release on the rear side
  • Release under load possible
  • With door monitoring contact
TX3B-A024MC1991 (Order no. 085391)

Description

Approach direction

Horizontal and vertical

Can be adjusted in 90° steps

Solenoid operating voltage

  • AC/DC 24 V +10%, -15%

LED function display

The switch has a function display (2 LEDs, red and green). The LED voltage is same as the solenoid operating voltage.

Guard locking type

TX3

Closed-circuit current principle, guard locking by spring force. Release by applying voltage to the solenoid. Release under load possible.

Switching element

ETX B

Slow-action switching contact 2 NC / 1 NO + 1 NC (door monitoring contact)

Auxiliary release

This is used for releasing the guard locking with the aid of a tool. The auxiliary release must be sealed to prevent tampering (for example with sealing lacquer).

Escape release

This is used for manual release of guard locking from the danger zone without tools. With identification of On/Off position.

Switching function
Switching function
Dimension drawing
Dimension drawing
Wiring diagram ETX BAC/DC 24 V
Wiring diagram ETX BAC/DC 24 V
Electromechanical safety switches in use

Functional drawings

Functional drawings

Dimensional drawings

Dimensional drawings
1Auxiliary release
2LED indicator
3Locking screw
4Escape release, basic position
5Escape release, unlocked position

Connection examples

Connection examples

Technical data

Approvals

EAC_RU C-DE.MO05.B.00971/20DNV-GL_TAA0000172 Rev. 1CCC2024010305643586_SafetySwitch T_STc_UL_us_E155795_2/1

Operating and display elements

LED display Operating voltage corresponds to the solenoid voltage (2 LEDs; green, red)

Electrical connection values

Power consumption 8 W (48 W at the instant switched on)
Connection cross section 0.34 ... 1.5 mm²
Rated insulation voltage Ui 50 V
Rated impulse withstand voltage Uimp 2.5 kV
Utilization category
AC-15 4 A 50 V
DC-13 4 A 24 V
Short circuit protection according to IEC 60269-1 4A gG
Solenoid operating voltage
AC/DC 24 V -15% ... +10%
Solenoid duty cycle 100 %
Switching voltage
min. at 10 mA 12 V
Switching current
min. at 24 V 1 mA
Control voltage
Us AC/DC 24 V
thermal rated current Ith 4 A

Mechanical values and environment

Approach speed max. 20 m/min
Approach direction A
Connection type
3 x M20 x 1.5
Number of door position NC contacts 1
Number of guard lock monitoring NO contacts 1
Number of guard lock monitoring positively driven contacts 2
Extraction force 35 N
Actuation frequency max. 1200 1/h
Actuating force 35 N
Installation orientation any
Insertion depth 32 mm
Mechanical life 1 x 10⁶
Retention force 50 N (Unlocking under load)
Switching principle Slow-action switching contact
Degree of protection IP67
Ambient temperature -20 ... +80 °C
Material
Contact Silver alloy, gold flashed
Housing Die-cast alloy cathodically dipped
Locking force Fmax 1700 N
Locking force FZh 1300 N
Guard locking principle Closed-circuit current principle (Unlocking under load)

Characteristic values according to EN ISO 13849-1 and EN IEC 62061

B10DMission time
Monitoring of the guard position5x10620 y
Important! Values valid at DC-13 100 mA/24V
Monitoring of guard locking5x10620 y
Important! Values valid at DC-13 100 mA/24V


PLMaximum SILCategoryMission time
Control of guard lockingDepending on external control of guard locking20 y


Miscellaneous

C number
C1991 (Escape release with short actuator shaft)

In combination with actuator ACTUATOR-X-GQ

Overtravel 1 mm

In combination with actuator ACTUATOR-X-GNQ

Overtravel 8 mm

Accessories

Downloads

Complete package

Download all important documents with a single click.

Content:

  • The operating instructions and any additions to the operating instructions or brief instructions
  • Any data sheets to supplement the operating instructions
  • The declaration of conformity
Download Complete Package (ZIP, 5,2 MB)

Single Documents

Other Documents

Ordering data

Ordernumber 085391
Item designation TX3B-A024MC1991
Gross weight 0,928kg
Customs tariff number 85365019000
ECLASS 27-27-26-03 Safety switch with guard control

Technical support

Technical support
Do you have technical questions about our products, their possible use or applications? Our experts will be happy to help.

EUCHNER (UK) Ltd.
+44 114 2560123
sales(at)euchner.co.uk

EUCHNER USA Inc.
+1 315 701-0315
info(at)euchner-usa.com

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