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1SFA611281R1004 ABB M2SSK2-104 Two-Position Maintained Key Selector Switch
ABB M2SSK2-104 is a black non-illuminated two-position maintained key selector switch with random key selection, key removal in position B only, a black plastic front ring, 22 mm mounting and IP66 front protection for industrial control applications.
£24.60
Why Choose the ABB M2SSK2-104 Key Selector Switch?
The ABB M2SSK2-104 is a two-position maintained key-operated selector switch designed for industrial machinery, automation systems and electrical control panels where controlled access to switching functions is required. Part of ABB’s modular plastic pilot-device range, it features a black key-operated actuator with a black plastic bezel.
The M2SSK2-104 provides maintained two-position operation with no spring return, so the selected state remains engaged until deliberately changed with the key. The key can be removed in position B only, providing a defined key-release position for machine-control and operating-mode applications.
ABB order code 1SFA611281R1004 identifies this exact M2SSK2-104 key selector switch. This variant uses random key selection, with each selector supplied with a unique key code, and the order code covers a package of 25 key-operated selector switches.
Key Advantages
- Two-position maintained key selector for controlled industrial switching.
- Key removable in position B only for defined access-control procedures.
- Random key selection provides individual key coding across supplied switches.
- No spring return, allowing the selected state to remain engaged.
- 22 mm mounting-hole format suits standard industrial control panels.
- IP66 front protection and NEMA 4X classification support demanding environments.
Key Features
- ABB M2SSK2 modular key selector switch.
- Two operating positions.
- Maintained switching function.
- No spring return.
- Key-operated actuator.
- Random key selection.
- Key removable in position B only.
- Black control element.
- Non-illuminated construction.
- Black plastic front ring.
- 22 mm mounting-hole diameter.
- IP66 front protection.
- NEMA 4X classification.
- Supplied without contact block.
Controlled Key-Operated Selection for Industrial Machinery
Key-operated selector switches provide a practical way to restrict machine functions or operating-mode changes to personnel holding the appropriate key. The ABB M2SSK2-104 provides two maintained positions and allows key removal in position B only, helping establish a clearly defined key-release state within the operating procedure.
This random-selection variant is intended for applications requiring individually keyed selectors. Each switch within the ordered set has a unique key code, while ABB’s modular construction allows compatible contact blocks to be selected separately according to the electrical switching requirements of the application.
Typical Applications
- Industrial machine control panels.
- Authorised operating-mode selection.
- Factory automation equipment.
- Key-controlled machine functions.
- Production and process machinery.
- Conveyors and material handling systems.
- Industrial operator stations.
- OEM machinery and electrical control systems.
Technical Specifications
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| Illumination | Non-illuminated | |
|---|---|---|
| Product Series | ABB Modular | |
| Mounting Diameter | 22 mm | |
| Operation | Maintained | |
| Device Type | Key Selector Switch | |
| Series | M2SSK2 Modular Pilot Devices | |
| ABB order code | 1SFA611281R1004 | |
| Product group | 312001-Pilot Devices (Secrl) | |
| Product type | Key selector switch operator | |
| Number of positions | 2 | |
| Switching function | Maintained / latching | |
| Spring return | No | |
| Actuator type | Key | |
| Key selection | Random selection | |
| Key removal | Position B only | |
| Control element colour | Black | |
| Illumination | Non-illuminated | |
| Front ring material | Plastic | |
| Front ring colour | Black | |
| Mounting-hole diameter | 22 mm | |
| Front protection rating | IP66 | |
| NEMA classification | 4X | |
| Contact block | Not included | |
| Product weight | approx. 0.045 kg | |
| Minimum order quantity | 25 pieces |
Frequently Asked Questions
What is the ABB M2SSK2-104 used for?
The ABB M2SSK2-104 is a two-position maintained key selector switch used for controlled machine functions, operating-mode selection and industrial applications where keyed operation is required.
Is the ABB M2SSK2-104 maintained or momentary?
The M2SSK2-104 is maintained, or latching, and has no spring return, so the selected position remains engaged until changed with the key.
Where can the key be removed from the ABB M2SSK2-104?
The key can be removed in position B only, providing a defined key-release position for the control application.
What does random key selection mean for the M2SSK2-104?
The M2SSK2-104 is a random-selection key selector. ABB specifies that each selector switch has a unique key code, with standard key codes 455, 421 and 3433-E excluded from this random-selection option.
What is the ABB order code for the M2SSK2-104?
The ABB order code for the M2SSK2-104 is 1SFA611281R1004.
Trusted Industrial Control from ABB
ABB modular pilot devices provide dependable operator control for machinery, automation systems and electrical panels, with configurable operators, contact arrangements and key-operated selector options suited to a wide range of industrial control functions.
