£46.47
The ABB 1SFA611525R1101, also known as the MPEK4-11R, is a reliable key release emergency stop actuator designed for industrial machinery safety, automation control panels and operator interfaces. Part of ABB’s trusted Modular Plastic Range, this emergency stop device provides controlled shutdown capability for demanding industrial applications.
Featuring a highly visible 40 mm red mushroom actuator with a key release reset mechanism, the MPEK4-11R allows authorised personnel to reset emergency stop functions while helping prevent accidental machine restart. The unit is supplied as an actuator head without contact blocks, allowing flexible configuration with compatible ABB contact blocks.
Designed for ABB 22 mm modular pilot device systems, the 1SFA611525R1101 provides robust construction, high mechanical durability and reliable operation in industrial environments. Its non-illuminated design and IP66 front protection make it suitable for machine safety applications where fast emergency access is required.
The ABB 1SFA611525R1101 MPEK4-11R provides a dependable emergency shutdown interface for industrial equipment, allowing operators to quickly stop machinery during unsafe conditions. When combined with suitable ABB contact blocks, it creates a complete emergency stop control solution.
The modular ABB design allows easy installation and configuration while supporting reliable operation, reduced maintenance requirements and flexible machine safety integration.
| Manufacturer | ABB |
|---|---|
| Product type | Emergency stop actuator |
| Model | 1SFA611525R1101 |
| Alternate model | MPEK4-11R |
| Actuator type | Mushroom pushbutton |
| Actuator diameter | 40 mm |
| Colour | Red |
| Reset method | Key release |
| Illumination | Non-illuminated |
| Contact blocks | Sold separately |
| Mounting diameter | 22 mm |
| Front protection rating | IP66 |
| NEMA rating | Type 1, 12, 13, 3R, 4, 4X |
| Mechanical durability | 100,000 cycles |
| Operating temperature | -25°C to +85°C |
| Dimensions (W × H × D) | Approx. 40 × 40 × 68 mm |
| Weight | Approx. 0.065 kg |
| HS Code | 85365080 |
| Country of Manufacture | China |
The ABB 1SFA611525R1101 is an emergency stop actuator used for manual machine shutdown and industrial safety applications.
The MPEK4-11R uses a key release mechanism to reset the emergency stop function.
No, the actuator is supplied without a contact block. Compatible ABB contact blocks must be selected separately.
The MPEK4-11R features a highly visible 40 mm mushroom actuator.
The actuator provides an IP66 front protection rating when correctly installed.
ABB emergency stop devices provide reliable machine safety solutions with flexible modular designs for industrial automation and control systems worldwide.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...