In industrial automation and machinery safety, an emergency stop system is critical. While devices like the Key Lock Emergency Stop Button and the Emergency Stop Button with Key serve their purposes, the Key-Release Emergency Stop Button provides a distinct operational advantage. It combines the reliability of a traditional E‑Stop with a key‑release mechanism that prevents accidental or unauthorized restart. By requiring a key to release the stop condition, this component enhances lockout/tagout procedures and ensures that machinery remains safely de‑energized until a supervisor consciously resets the system. Engineered for heavy‑duty use, the Key-Release Emergency Stop Button delivers fail‑safe performance in manufacturing lines, packaging equipment, and process control panels.
The Key-Release Emergency Stop Button is constructed around a robust, mushroom‑head actuator with a distinctive red‑yellow color scheme that meets ISO 13850 and EN 60947‑5‑5 standards. Unlike standard push‑pull emergency stops, this device remains latched after activation. The only way to release the button and restore the circuit is by inserting and turning the dedicated key. This key‑release function essentially creates a physical barrier between an operator’s intention and machine restart, significantly reducing the risk of unexpected energization. The button’s contacts are gold‑plated for low‑level switching reliability, and the housing is made of impact‑resistant thermoplastic with an IP66 protection rating. It can withstand harsh environments, including vibration, dust, and water spray, making it suitable for outdoor or washdown applications. Engineers choose the Key-Release Emergency Stop Button for critical safety circuits where manual key reset is required by risk assessments. It is widely installed on conveyor systems, robotic cells, CNC machines, and material handling equipment. The ability to retain the key in the off position also facilitates effective lockout/tagout verification during maintenance.
| Parameter | Specification |
|---|---|
| Contact Configuration | 1NC or 1NC+1NO (positive opening) |
| Rated Insulation Voltage | 500 V AC |
| Rated Thermal Current | 10 A |
| Rated Operational Current | 5 A / 250 V AC; 3 A / 24 V DC |
| Operating Force | ≤ 50 N |
| Reset Method | Key release (key retained in off position) |
| Degree of Protection | IP66 (front panel) |
| Mounting Hole Diameter | 22.5 mm |
| Operating Temperature | −25 °C to +70 °C |
| Storage Temperature | −40 °C to +85 °C |
| Mechanical Lifespan | > 1,000,000 cycles |
| Electrical Lifespan | > 100,000 cycles at rated load |
| Housing Material | Polyamide PA6, UL94 V‑0 self‑extinguishing |
| Key Material | Nickel‑plated brass |
| Compliance | EN 60947‑5‑1, EN 60947‑5‑5, ISO 13850, CE, UL, TÜV |
