Why SICK RE23-SAC?
The SICK RE23-SAC is chosen when safety must be reliable, maintenance must be minimal, and machine uptime cannot be compromised. Its non-contact magnetic sensing design avoids mechanical wear, making it ideal for high-cycle guard monitoring. The ability to operate reliably despite vibration, slight misalignment, or environmental contamination gives machine builders greater design freedom. With proven industrial durability and compliance with high safety requirements, the RE23-SAC offers long-term confidence for safety-critical applications where consistency and robustness matter more than complexity.
What Problem Does It Solve?
The SICK RE23-SAC solves the problem of unreliable guard position detection in harsh or high-usage industrial environments. Mechanical switches often fail due to wear, dirt ingress, or alignment issues, leading to downtime or safety risks. By using magnetic, non-contact detection, this safety switch ensures stable and repeatable monitoring of protective doors and covers. It maintains safety integrity even when conditions change over time, helping prevent unexpected machine operation while protecting both personnel and production continuity.
Key Features & Specifications – SICK RE23-SAC: Part Number 1059508
| Feature | Details | Benefit |
|---|---|---|
| Sensor Principle | Magnetic sensing (reed contacts) | Reliable switching even with vibration or misalignment |
| Safety Category | Type 4 (EN ISO 14119) | Suitable for high-level machine safety applications |
| Actuator Coding Level | Low coding level | Simple integration for standard guard monitoring |
| Contacts | 2 × N/O safety contacts | Secure detection of guard closed state |
| Assured Switch-On Distance (Sao) | 9 mm | Stable operation despite minor alignment shifts |
| Assured Switch-Off Distance (Sar) | 22 mm | Clear separation between safe and unsafe states |
| Actuation Directions | 5 possible directions | Flexible installation in compact machine designs |
| Active Sensor Surfaces | 1 | Predictable and repeatable switching behavior |
| Series Connection | Safe series connection with diagnostics support | Reduced wiring effort for multi-guard systems |
| Connection Type | M8 plug connector, 4-pin | Fast installation and secure electrical connection |
| Status Indication | Integrated LED indicators | Simplified commissioning and troubleshooting |
| Housing Material | VISTAL® | High mechanical strength and industrial durability |
| Enclosure Rating | IP67 | Reliable operation in dusty and wet environments |
| Operating Temperature | –30 °C to +60 °C | Suitable for harsh industrial conditions |
| Switching Voltage | Up to 30 V DC | Compatible with common safety control circuits |
| Switching Current | Up to 100 mA | Stable signal transmission to safety controllers |
| Dimensions (W × H × D) | 25 × 88 × 13 mm | Compact form factor for space-limited machines |
| B10d Value | 2 × 10⁷ switching cycles | Proven reliability for long-term safety performance |
Download SICK RE23-SAC (1059508) Datasheet
Commercial Information – SICK RE23-SAC (Part No. 1059508)
| Commercial Data | Details |
|---|---|
| EAN Number | 4047084261268 |
| Weight | 87 g |
| Country of Origin | Malaysia |
The Applications
1. Packaging Machines with Frequent Door Access
High-speed packaging equipment requires frequent operator access for film replacement, jam removal, and routine inspection. In these machines, safety doors are opened and closed many times per shift, creating wear and alignment challenges. The RE23-SAC addresses this by using non-contact magnetic sensing, which remains stable even when hinges loosen slightly over time. Its defined switching distances ensure the machine reliably stops whenever a guard is opened. The compact housing and flexible actuation directions simplify installation in crowded machine frames, helping maintain safety compliance without increasing downtime or maintenance effort.
2. Automated Material Handling and Conveyor Systems
Conveyor lines and transfer systems often include multiple access panels to protect operators from moving components. Dust, vibration, and mechanical shock can cause conventional safety switches to fail or trigger inconsistently. The RE23-SAC solves this by operating without physical contact, preventing contamination from affecting switching performance. Its sealed design supports reliable operation in dusty environments, while visual status indication allows maintenance teams to quickly verify guard conditions. The option for series connection also reduces wiring complexity across long conveyor runs, improving system reliability and simplifying safety circuit design.
3. Robotic Cells and Automated Assembly Lines
Robotic work cells demand precise safety monitoring to prevent human access while robots are active. The RE23-SAC is well suited for guarding doors and removable panels surrounding robotic enclosures. Its fast and repeatable switching ensures immediate detection of door openings, reducing risk during operation. Multiple actuation directions allow flexible sensor placement without redesigning the enclosure. Because the switch does not rely on mechanical contact, it delivers consistent performance over extended operating cycles, supporting continuous production while maintaining strict safety standards in automated assembly environments.
4. Industrial Machinery in Harsh Operating Conditions
Industrial machines used in demanding environments often face moisture, temperature variation, and aggressive cleaning routines. Mechanical safety switches may corrode or stick under these conditions, reducing reliability. The RE23-SAC avoids these issues through non-contact operation and a rugged housing design. Its wide operating temperature range ensures stable performance even during thermal fluctuations. Defined switching distances compensate for minor door movement caused by environmental stress, ensuring machines remain safely disabled during access while supporting long-term operational stability in harsh industrial settings.