EUCHNER – More than safety.
EUCHNER – More than safety.
HomeProductsElectromechanical safety switches with guard lockingSTM compact plastic switch with metal or plastic headSTM2A-242B024-M

STM2A-242B024-M (Order no. 095399)

Safety switch STM

  • Actuating head made of metal
  • Auxiliary release on the front
STM2A-242B024-M (Order no. 095399)

Description

Approach direction

Horizontal and vertical

Can be adjusted in 90° steps

Solenoid operating voltage

  • AC/DC 24 V +10%, -15%

Guard locking type

STM2

Open-circuit current principle, guard locking by applying voltage to the guard locking solenoid. Release by spring force.

Switching element

ÜK

For monitoring the guard locking (built-in solenoid) slow-action switching contact 1 NC

Combination available:

242

Slow-action switching contact 1 NC + 1 NO

Auxiliary release

This is used for releasing the guard locking with the aid of a tool. To protect against tampering, the auxiliary release is sealed with sealing lacquer.

Switching function
Switching function
Dimension drawing
Dimension drawing
Wiring diagram 242
Wiring diagram 242
Electromechanical safety switches in use

Functional drawings

Functional drawings

Dimensional drawings

Dimensional drawings
1Auxiliary release
2Locking screw
3Actuator S standard
4Insertion depth

Connection examples

Connection examples

Technical data

Approvals

EAC_RU C-DE.MO05.B.00971/20DGUV_STM_ET 22021_ET 22022c_UL_us_E155795_6/1CCC2024010305643586_SafetySwitch T_ST

Electrical connection values

Power consumption 6 W
Connection cross section 0.34 ... 1.5 mm²
Rated insulation voltage Ui 250 V
Rated impulse withstand voltage Uimp 2.5 kV
Utilization category
DC-13 4 A 24 V
AC-15 4 A 230 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
thermal rated current Ith 4 A

Mechanical values and environment

Approach speed max. 20 m/min
Approach direction B
Connection type
1 x M20 x 1.5
Number of door position NO contacts 1
Number of door position positively driven contacts 1
Number of guard lock monitoring positively driven contacts 1
Extraction force 30 N
Actuation frequency max. 1200 1/h
Actuating force 35 N
Installation orientation any
Insertion depth 24.5 mm
Mechanical life 2 x 10⁶
Retention force 20 N
Switching principle Slow-action switching contact
Degree of protection IP67
Ambient temperature -20 ... +55 °C
Material
Housing Reinforced thermoplastic
Contact Silver alloy, gold flashed
Locking force Fmax 2000 N
Locking force FZh 1500 N
Guard locking principle Open-circuit current principle

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

B10DMission time
Monitoring of the guard position2x10620 y
Important! Values valid at DC-13 100 mA/24V
Monitoring of guard locking2x10620 y
Important! Values valid at DC-13 100 mA/24V


In combination with actuator ACTUATOR-S-GT-SN

Overtravel 5 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, 6,3 MB)

Single Documents

Other Documents

Ordering data

Ordernumber 095399
Item designation STM2A-242B024-M
Gross weight 0,483kg
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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