STA-BI-3A-2131A024RC18C1826 (Order no. 111726)
Safety switch STA, plug connector M23 (RC18), with door monitoring contact
- Auxiliary release on the front
- Additional bi-state function
- With door monitoring contact
- Plug connector M23 (RC18)

Description
Additional bi-state function
In addition, the STP-BI has a function to prevent
- persons from unintentionally locking themselves inside if the safety door is open in case of a power failure or if the machine is switched off
- the deactivation of the activated guard locking in case of a power failure.
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 |
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.




Functional drawings

Dimensional drawings

| 1 | Auxiliary release |
| 2 | Locking screw |
| 3 | Built-in connector |
| 4 | Screw plug M20x1.5 (2x) |
| 5 | Built-in connector - RC 18 not aligned |
Connection examples

Technical data
Approvals



Electrical connection values
| Fuse | max. 4 A gG |
| Power consumption | 8 W |
| Rated insulation voltage Ui | 50 V |
| Rated impulse voltage Uimp | 1.5 kV |
| Utilization category | |
| AC-15 | 4 A 50 V |
| DC-13 | 4 A 24 V |
| Solenoid operating voltage | |
| 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 | |
| 1 x | Plug connector RC18 (18-pin + PE) |
| 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 |
| Storage temperature | -25 ... 70 °C |
| Mechanical life | 1 x 10⁶ |
| Retention force | 20 N |
| Switching principle | Slow-action switching contact |
| Degree of protection | IP65 |
| Ambient temperature | -20 ... 70 °C |
| Material | |
| Housing | Alloy - die-cast |
| Contact | Silver alloy, gold flashed |
| Locking force Fmax | 3000 N |
| Locking force FZh | 2300 N |
| Guard locking principle | BiState |
Characteristic values according to EN ISO 13849-1 and EN IEC 62061
| PL | Maximum SIL | PFHD | Category | Mission time | |
|---|---|---|---|---|---|
| Control of guard locking | PL b | - | 4.23x10-6 | b | 20 y |
| B10D | Mission time | |
|---|---|---|
| Guard lock monitoring | 3x106 | 20 y |
| Important! Values valid at DC-13 100 mA/24V | ||
Miscellaneous
| C number | |
| C1826 | Special wiring |
Accessories
AE-B-A1-02,0-096230
- Can be used as escape release or emergency release
- no automatic return
- Sheath length 2 m (rope length 6 m)
AE-B-A1-02,0-F-097747
- Can be used as escape release or emergency release
- automatic return
- Sheath length 2 m (rope length 6 m)
AE-B-A1-03,0-098313
- Can be used as escape release or emergency release
- no automatic return
- Sheath length 3 m (rope length 6 m)
AE-B-A1-04,0-098314
- Can be used as escape release or emergency release
- no automatic return
- Sheath length 4 m (rope length 6 m)
AE-B-A1-03,0-F-111233
- Can be used as escape release or emergency release
- automatic return
- Sheath length 3 m (rope length 6 m)
AE-B-A1-06,0-125582
- Can be used as escape release or emergency release
- no automatic return
- Rope length 6 m (without sheath)
AE-B-A1-06,0-F-124770
- Can be used as escape release or emergency release
- automatic return
- Rope length 6 m (without sheath)
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
Single Documents
Other Documents
Ordering data
| Ordernumber | 111726 |
| Item designation | STA-BI-3A-2131A024RC18C1826 |
| Gross weight | 0,719kg |
| Customs tariff number | 85365019000 |
| ECLASS | 27-27-26-03 Safety switch with guard control |
+ 1 NO + 1 NC (door monitoring contact)





















