TELEMECANIQUE XCSTA591 — Safety Door Switches
Telemecanique XCSTA591: plastic safety interlock switch, 1 NC + 2 NO, Pg 11 entries, up to PL e, IP67, double insulated.
Status: In production
Brand: Telemecanique
Product: Plastic safety interlock switch with separate actuator (key-operated)
Contacts: 1 NC + 2 NO
Performance level (PL): Up to PL e, SIL 3, category 4 (with appropriate monitoring)
Cable entry: 2 entries tapped for Pg 11
Mechanical durability: 1,000,000 cycles
Degree of protection: IP67
The Telemecanique XCSTA591 is a compact, double-insulated plastic safety interlock switch from the XCS range. It has a key-operated turret head worked by a separate actuator (key) and does not lock the actuator. Contacts are 1 NC + 2 NO, slow-break, break before make, with positive opening of the NC contact (minimum 15 N). Body and head are PA polyamide. According to the data sheet it has two Pg 11 tapped cable entries. With the appropriate monitoring system and correct wiring it can reach category 4 and PL e to ISO 13849-1 and SIL 3 to IEC 61508.
Rated operational current is 6 A at 120 V and 3 A at 240 V in AC-15, and 0.55 A at 125 V and 0.27 A at 250 V in DC-13. Rated insulation voltage is 500 V to IEC 60947-1 and rated impulse withstand voltage is 6 kV. Mechanical durability is 1,000,000 cycles and B10d is 5,000,000 for a life time of 20 years. Dimensions are 52 × 115 × 30 mm and weight is 0.16 kg. Electrical shock protection is class II, degree of protection IP67, and operating temperature -25 to +70 °C. UL and CSA certified.
Telemecanique XCSTA591 technical specifications
| General | |
|---|---|
| Product type | Safety switch (actuator-operated) |
| Product range | XCS (XCSTA) |
| Design | Compact, plastic, double insulated |
| Head type | Key-operated turret head |
| Locking | Without actuator locking |
| Safety ratings | |
| Safety category | Up to category 4 with the appropriate monitoring system and correct wiring (ISO 13849-1) |
| Performance level (PL) | Up to PL e with the appropriate monitoring system and correct wiring (ISO 13849-1) |
| Safety integrity level (SIL) | Up to SIL 3 with the appropriate monitoring system and correct wiring (IEC 61508) |
| B10d | 5,000,000 (for a life time of 20 years) |
| Positive opening | Yes (NC contacts) |
| Positive opening minimum force | 15 N |
| Electrical characteristics | |
| Contacts | 1 NC + 2 NO |
| Contact operation | Slow-break, break before make |
| Rated operational current | AC-15 A300: 6 A at 120 V, 3 A at 240 V; DC-13 Q300: 0.55 A at 125 V, 0.27 A at 250 V |
| Rated insulation voltage (Ui) | 500 V (IEC 60947-1); 300 V (UL 508, CSA C22.2 No 14) |
| Short-circuit protection | 10 A cartridge fuse, type gG (gl) |
| Mechanical and connection | |
| Cable entry | 2 entries tapped for Pg 11 |
| Cable outer diameter | 7–10 mm |
| Housing material | PA polyamide (body and head) |
| Dimensions (W × H × D) | 52 × 115 × 30 mm |
| Net weight | 0.16 kg |
| Resistance to forcible actuator withdrawal | 10 N |
| Mechanical durability | 1,000,000 cycles |
| Actuation speed | 0.01 to 0.5 m/s |
| Environmental | |
| Operating temperature | -25 to +70 °C |
| Storage temperature | -40 to +70 °C |
| Electrical shock protection class | Class II (IEC 61140) |
| Degree of protection | IP67 (EN/IEC 60529, EN/IEC 60947-5-1) |
| Certifications | UL, CSA |
Key features
- Compact, double-insulated PA polyamide body
- Key-operated turret head with separate actuator, no actuator locking
- 1 NC + 2 NO slow-break contacts; positive opening of NC contact
- Up to category 4, PL e and SIL 3 with appropriate monitoring
- Mechanical durability 1,000,000 cycles, B10d 5,000,000
- IP67, class II, -25 to +70 °C
XCSTA591 ordering codes
| Part number | Description |
|---|---|
| XCSTA591 | Plastic safety switch XCSTA, 1 NC + 2 NO, slow-break, Pg 11 entry |
XCSTA591 accessories
Accessories listed by the manufacturer for this product (ordered separately):
| Part number | Description |
|---|---|
| XCSZ11 | Straight actuator (for plastic switch) |
| XCSZ12 | Actuator with wide fixing, length 40 mm (for plastic switch) |
| XCSZ13 | Pivoting actuator (for plastic switch) |
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- TELEMECANIQUE XCSD3902P20 — Compact metal safety limit switch, roller plunger, 2 NC + 1 NO
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Models from other brands: Safety Door Switches
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All product specifications are subject to change without notice. Validation of the safety function and the risk assessment remain the responsibility of the machine builder. Source: Telemecanique Sensors product data sheets (XCSTA591_EN.pdf, sheet date 30 July 2024; downloads.telemecaniquesensors.com/dam/datasheets/en/) and telemecaniquesensors.com/global/en/product/reference/ reference pages (accessed 25 September 2026).