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1SFA611285R3003 ABB M3SSK3-303 3-Position Momentary Key Selector Switch
ABB M3SSK3-303 is a three-position momentary key-operated selector switch with a 3433-E key, spring return from A and C to B, chrome-metal front ring, 22 mm panel mounting and IP66 front protection for industrial control applications.
£24.60
Why Choose the ABB M3SSK3-303 Selector Switch?
The ABB M3SSK3-303 is a three-position momentary key-operated selector switch from ABB's modular plastic pilot-device range, designed for industrial machinery, control panels and automation systems. Its key-operated interface combines controlled access with temporary selector commands for applications requiring deliberate machine or process operation.
The M3SSK3-303 provides three selector positions with spring return from A and C to B, automatically returning the actuator to its centre position when released from either outer position. It uses a 3433-E key with code 73, making it suitable for temporary directional and command functions requiring key-controlled operation.
Designed for standard 22 mm panel mounting, the M3SSK3-303 features a black key-operated actuator, chrome-metal front ring, non-illuminated construction and IP66 front protection. It is supplied without a contact block, allowing compatible ABB modular contact blocks to be selected according to the required electrical switching arrangement.
Key Advantages
- Three-position momentary operation provides temporary key-controlled commands in either direction.
- Spring return from A and C to B automatically restores the selector to its centre position.
- 3433-E key with code 73 provides a defined key-operated control interface.
- Chrome-metal front ring provides a durable industrial operator-panel finish.
- IP66 front protection and NEMA Type 4X protection support demanding industrial environments.
- Standard 22 mm panel mounting supports straightforward integration into machinery and control panels.
Key Features
- ABB M3SSK3 key-operated selector switch.
- Three-position operation.
- Momentary switching function.
- Spring return from A to B and C to B.
- 3433-E key.
- Key code 73.
- Black key-operated actuator.
- Chrome-metal front ring.
- Non-illuminated construction.
- 22 mm mounting-hole diameter.
- IP66 front protection.
- NEMA Type 4X protection.
Reliable Key-Controlled Spring-Return Operation for Industrial Machinery
Three-position momentary key selector switches provide controlled temporary commands where access to the operating function should be restricted by a key. The ABB M3SSK3-303 provides spring return from both outer positions to the centre B position, so the selector automatically returns when the operator releases the key actuator.
This operating arrangement is well suited to temporary directional, jog, raise/lower, open/close and positioning commands. Combined with its 3433-E key, chrome-metal front ring and ABB modular contact-block architecture, the M3SSK3-303 provides a flexible operator interface for industrial machinery and automation systems.
Typical Applications
- Industrial machinery control panels.
- Key-controlled temporary machine commands.
- Forward/reverse control functions.
- Raise/lower and open/close controls.
- Machine jogging and positioning commands.
- Material handling and conveyor equipment.
- Production and process automation systems.
- OEM machinery and electrical control assemblies.
Technical Specifications
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| Illumination | Non-illuminated | |
|---|---|---|
| Device Type | Key Selector Switch | |
| Product Series | ABB Modular | |
| Mounting Diameter | 22 mm | |
| Colour | Black | |
| Operation | 3 positions – spring return | |
| Series | M3SSK3 / ABB Modular Plastic Pilot Devices | |
| ABB order code | 1SFA611285R3003 | |
| Product group | 312001-Pilot Devices (Secrl) | |
| Product type | Key-operated selector switch | |
| Number of positions | 3 | |
| Selector positions | A-B-C | |
| Operating function | Momentary | |
| Spring return | A to B and C to B | |
| Latching function | No | |
| Actuator type | Key operated | |
| Actuator colour | Black | |
| Key type | 3433-E | |
| Key code | 73 | |
| Illumination | Non-illuminated | |
| Front ring | Included | |
| Front ring material | Metal | |
| Front ring finish | Chrome | |
| Contact block | Not included | |
| Mounting-hole diameter | 22 mm | |
| Front protection rating | IP66 | |
| NEMA protection | Type 4X | |
| Mechanical durability | 0.5 million operations | |
| Ambient operating temperature | -25 to +70 °C | |
| Product dimensions | 30 × 30 × 63 mm | |
| Product weight | 0.054 kg | |
| EAN | 7320500315941 | |
| Standards | IEC/EN 60947-1, IEC/EN 60947-5-1, UL 508, CAN/CSA C22.2 No.14 |
Frequently Asked Questions
What is the ABB M3SSK3-303?
The ABB M3SSK3-303 is a three-position momentary key-operated selector switch from ABB's modular plastic pilot-device range, designed for controlled temporary commands in industrial machinery and automation systems.
How many positions does the ABB M3SSK3-303 have?
The M3SSK3-303 has three A-B-C selector positions, with B serving as the centre return position.
Is the ABB M3SSK3-303 maintained or momentary?
The M3SSK3-303 is momentary. It uses spring return from both outer positions to the centre position rather than a maintained or latching switching function.
How does the spring return on the ABB M3SSK3-303 work?
The selector provides spring return from A to B and from C to B, automatically returning to the centre B position when released from either outer position.
What key does the ABB M3SSK3-303 use?
The M3SSK3-303 uses a 3433-E key with code 73.
What type of front ring does the ABB M3SSK3-303 have?
The M3SSK3-303 has a chrome-metal front ring combined with a black key-operated actuator.
What mounting size and protection rating does the ABB M3SSK3-303 have?
The M3SSK3-303 is designed for a 22 mm mounting hole and provides IP66 front protection and NEMA Type 4X protection.
Does the ABB M3SSK3-303 include a contact block?
No. The M3SSK3-303 is supplied without a contact block, allowing compatible ABB modular contact blocks to be selected according to the required electrical switching function.
Trusted by Industrial Automation Professionals Worldwide
ABB modular pilot devices are widely used by machine builders, panel builders and automation engineers to provide dependable operator control, clear machine-function selection and flexible integration into industrial machinery, automation equipment and electrical control systems.
