Euchner EUCHNER STA3A-2131A024MF-EX

ORDER NO. 115584

Order number	115584
Item designation	STA3A-2131A024MF-EX
Gross weight	0,972kg
Customs tariff number	85365019

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

Approach direction

Horizontal and vertical

Can be adjusted in 90° steps

Solenoid operating voltage

• AC/DC 24 V +10%, -15%

Guard locking type

STA3	Closed-circuit current principle, guard locking by spring force. Release by applying voltage to the guard locking solenoid.

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.

Electrical connection ratings

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

Mechanical values and environment

Approach direction	A
Approach speed	max. 20 m/min
Number of door position NC contacts	1
Number of guard lock monitoring NO contacts	1
Number of guard lock monitoring positively driven contacts	2
Connection
3 x	Cable gland M20 x 1.5
Degree of protection	IP67
Extraction force	30 N
Material
Housing	Die-cast alloy
Contact	Silver alloy, gold flashed
Actuation frequency	max. 1200 1/h
Actuating force	35 N
Mechanical life	1 x 10⁶
Installation orientation	any
Insertion depth	24.5 mm
Switching principle	Slow-action switching contact
Clamping range for cable	6.5 … 12 mm
Retention force	20 N
Ambient temperature	-20 … +75 °C
Locking force Fmax	3000 N
Locking force FZh	2300 N
Guard locking principle	Closed-circuit current principle

Reliability values acc. to EN ISO 13849-1

	Control of guard locking
Category	Depending on external control of guard locking
Performance Level	Depending on external control of guard locking
PFHD	Depending on external control of guard locking
	Monitoring of guard locking and the guard position
B10D	11.5 x 10⁶

Miscellaneous

Explosion protection
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