Autonics SFD-A2B-M20 Safety Door Switch
The SFD-A2B-M20 Autonics Safety Door Switches unit provides IP67 protection with minimum 80N opening force and 1,000,000 operations life. Manufactured by Autonics, this model belongs to the SFN Series of Autonics Safety Door Switches used in industrial automation across India. It supports minimum 10mm directing opening distance, operating speed of 0.05 to 1m/s, maximum 20 operations per minute, M20 connector cable connection, IP67 protection structure except head, zinc head construction, polyamide 66 case, stainless steel 304 operation key, and approximately 120g weight.
| Brand | Autonics |
| Product Type | Safety Door Switch |
| Model Number | SFD-A2B-M20 |
Autonics SFD-A2B-M20 Safety Door Switch – Technical Specifications
| Specification | Value |
|---|---|
| Directing opening force | Min. 80N |
| Directing opening distance | Min. 10mm |
| Operating speed | 0.05 to 1m/s |
| Operating frequency | Max. 20/min |
| Life cycle_Mechanical | Min. 1,000,000 operations |
| Vibration_Malfunction | 0.75mm amplitude at frequency of 10 to 55Hzin each X,Y,Z direction for 10 min |
| Shock | 1,000m/s² (approx. 100G) in each X, Y, Z direction for 3 times |
| Shock_Malfunction | 300m/s² (approx. 30G) in each X, Y, Z direction for 3 times |
| Environment_Ambient temperature | -30 to 70℃, storage: -40 to 70℃ |
| Environment_Ambient humidity | 35 to 90%RH, storage : 35 to 90%RH |
| Protection structure | IP67(IEC standerd, except head) |
| Material | Head: polyamide 6, case: polyamide 6, operation key: stainless steel 304 |
| Applicable cable | AWG 20-18 (0.5 to 0.75mm²) |
| Sold separately | Operation key |
| Dielectric strength_Between the terminals | 2kV |
| Connection Type | M20 Connector cable |
| Rated load voltage & current | Resistive load : 6A/250VAC~, 0.6A/250VDC@(=)Inductive load : AC-15 3A/240VAC~,DC-13 0.27A/250VDC@(=) |
| Dielectric strength_Between each terminal and non-live part | 5kV |
| Insulation resistance | 100MΩ or more (500VDC megger basis) |
| Contact resistance | Max. 50mΩ (initial value) |
| Life cycle_Electrical | Min. 100,000 operations (240VAC~ 6A) |
| Conditional short circuit current | 100A |
| Weight | Approx. 120g(approx. 80g) |
The SFD-A2B-M20 Autonics Safety Door Switches device is designed for guard door monitoring and machine safety control in industrial automation systems. It operates with minimum 80N directing opening force, IP67 protection, and supports 1,000,000 mechanical operations for long service life. This model belongs to the SFN Series and is used in automation environments requiring stable mechanical door detection.
In industrial facilities across India, the SFD-A2B-M20 is commonly installed on guard doors of conveyors, packaging equipment, automated assembly stations, and production machinery. The operating speed range of 0.05 to 1m/s and maximum 20 operations per minute support controlled mechanical actuation cycles. Its zinc head, polyamide 66 case, and stainless steel operation key ensure reliable engagement under repetitive machine safety operations.
The SFD-A2B-M20 Autonics Safety Door Switches unit provides dependable safety door monitoring with defined opening force and controlled operating frequency. As part of the SFN Series manufactured by Autonics, it supports machine safety systems requiring durable construction and consistent mechanical performance. This model is suitable for guard door detection and machine access monitoring across industrial automation applications.
