HomeProdukteElectromechanical safety switches with guard lockingSTA metal switch with metal headSTA4A-2131A024MF-EX

STA4A-2131A024MF-EX (Order no. 115585)

Safety switch STA with door monitoring contact, ATEX

  • ATEX version
  • Suitable for use in zones 2 and 22 (gases and dusts)
  • Auxiliary release on the front
  • With door monitoring contact
STA4A-2131A024MF-EX (Order no. 115585)

Description

Approach direction

Horizontal and vertical

Can be adjusted in 90° steps

Solenoid operating voltage

  • AC/DC 24 V +10%, -15%

Guard locking type

STA4

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

Switching element

2131

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. To protect against tampering, the auxiliary release is sealed with sealing lacquer.

Function drawing<br>Switching function
Function drawing
Switching function
Dimension drawing
Dimension drawing
Wiring diagram<br>Wiring diagram 2131
Wiring diagram
Wiring diagram 2131
Electromechanical safety switches in use

Functional drawings

Functional drawings

Dimensional drawings

Dimensional drawings
1Auxiliary release
2Cover screw (4x M = 1.5 Nm)
3Locking screw
4Ground the switch via the terminal on the protective plate to prevent electrostatic charging (conductor cross-section 4 mm²)
5ATEX cable gland for included (cable diameter 6.5...12 mm)
6Two screw plugs included (M = 2 Nm)

Connection examples

Connection examples
square_grey_dark.epsDoor monitoring
square_grey_light.epsSolenoid monitoring

Technical data

Approvals

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

Electrical connection values

Fuse max. 4 A gG
Power consumption 8 W
Connection cross section 0.34 ... 1.5 mm²
Rated insulation voltage Ui 50 V
Rated impulse voltage Uimp 2.5 kV
Utilization category
AC-15 4 A 50 V
DC-13 4 A 24 V
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

Anfahrgeschwindigkeit max. 20 m/min
Approach direction A
Connection type
3 x Cable entry 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 30 N
Actuation frequency max. 1200 1/h
Actuating force 35 N
Installation orientation any
Insertion depth 24.5 mm
Clamping range for cable 6.5 ... 12 mm
Storage temperature -25 ... 75 °C
Mechanical life 1 x 10⁶
Retention force 20 N
Switching principle Slow-action switching contact
Degree of protection IP67
Ambient temperature -20 ... 75 °C
Material
Housing Die-cast alloy
Contact Silver alloy, gold flashed
Locking force Fmax 3000 N
Locking force FZh 2300 N
Guard locking principle Open-circuit current principle

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

B10DMission time
Monitoring of guard locking1.15x10720 y
Important! Values valid at DC-13 100 mA/24V


Miscellaneous

Explosion protection in accordance with ATEX Directive 2024/34/EU
incl. cable gland II3G Ex nR IIB T4 Gc X /II3D Ex tc IIIC T110°C Dc X

In combination with actuator ACTUATOR-S-G-SN-C2115

Overtravel 5 mm

Accessories

Downloads

Single Documents

Other Documents

Ordering data

Ordernumber 115585
Item designation STA4A-2131A024MF-EX
Gross weight 0,94kg
Customs tariff number 85365019000
ECLASS 27-27-26-03 Sicherheitsschalter mit Zuhaltung