Miller Edge AW 12A Air Wave Switch in Polycarbonate NEMA 4 Enclosure
The Miller Edge AW12A combines the AW10 Air-Wave pressure switch with a NEMA 4 polycarbonate enclosure. It is commonly selected where the switch is exposed to moisture or harsh conditions and needs better environmental protection than the switch-only AW10. When an Air-Wave edge or treadle is compressed, pressure in the hose activates the internal diaphragm and changes the switch output to signal the motor control circuit.
Common Applications and Replacement Reasons
- Used when an Air-Wave edge switch is damaged, out of adjustment, contaminated, or no longer responding consistently
- Used for air-activated sensing edges and treadles on motorized doors and select gate systems
- Often serviced along with air hose, end plugs, barbed connectors, and coil cord parts
Features & Specifications
| Manufacturer | Miller Edge |
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| Product Type | Air-Wave edge switch |
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| Part Number | AW12A |
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| Application | Air-Wave configured sensing edges and treadles |
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| Detection Technology | Pneumatic pressure |
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| Monitoring Type | Non-monitored |
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| Maximum Edge Length | Up to 60 ft. Air-Wave configured sensing edge |
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| Maximum Pressure | 3 PSI |
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| Adjustable Sensitivity | 0.078 to 19.7 in. water column |
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| Operating Temperature | -49 degrees F to +180 degrees F |
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| Output | N.O. and N.C. switch output; verify operator input requirements |
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| Maximum Contact Load | 0.5 A at 220 VAC or 1 A at 48 VDC |
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| Terminal Configuration | 0.187 in. quick-connect tabs |
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| Housing / Enclosure | AW10 switch in polycarbonate enclosure |
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| Degree of Protection | NEMA 4 |
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| Dimensions | 1-13/16 in. W x 6-3/4 in. H x 1-3/4 in. D with fittings |
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| Weight | 4.5 oz. |
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| Notes | AW10 switch in NEMA 4 polycarbonate enclosure |
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Compatible With
- Miller Edge Air-Wave configured sensing edges up to 60 ft.
- Miller Edge Air-Wave configured treadles
- Motorized commercial door applications where a non-monitored Air-Wave pressure switch is appropriate
- Select older commercial door operators that accept non-monitored 2-wire sensing edge inputs
- Select older gate operators when non-monitored secondary protection is allowed by the operator and local requirements
- Related Air-Wave edge components including RAH hose, P-50/P-50H, P-75/P-75H, 218-27-18, junction boxes, coil cords, and retracting reels
- Related Air-Wave kits AW14K500-12, AW14K500-12C, AW14K500-18, AW14K500-18C, AW14K500-24, and AW14K500-24C
- Not a monitored edge device for operators that require monitored external entrapment protection
Also Known As / Related Part Numbers
Technician Note
These Miller Edge Air-Wave switches are non-monitored pneumatic pressure switches. They are useful in cold, wet, refrigerated, high vibration, and condensation-prone locations, but they are not a substitute for a monitored edge where the operator requires monitored entrapment protection.
Before Ordering Checklist
- Confirm the original system is Air-Wave configured, not electric or resistive edge wiring
- Confirm the operator input can accept the selected non-monitored switch output
- Match the enclosure style to the environment and mounting location
- Inspect air hose, plugs, tubing, and fittings for leaks before replacing only the switch
- Cycle-test the edge after installation and confirm the operator stops or reverses properly
Professional Advisory
Do not use a non-monitored Air-Wave switch to bypass a required monitored safety device. For newer gate and door operators or unclear safety inputs, have a qualified technician review the operator manual, UL 325 requirements, and the full entrapment protection layout.
Product Questions and Answers
What is different about the Miller Edge AW12A?
The AW12A is the AW10 Air-Wave switch supplied in a NEMA 4 polycarbonate enclosure for better environmental protection.
Is AW12A used with Air-Wave treadles?
Yes. Miller Edge lists the AW10, AW12A, and AW14 Air-Wave switches for Air-Wave configured sensing edges and treadles.
Can AW12A replace AW10?
It may be used in place of an AW10 only when the electrical function and mounting layout match and the enclosure style is suitable for the installation.
Is the AW12A monitored?
No. AW12A is a non-monitored Air-Wave switch and must not be used where a monitored safety device is required.
Why choose AW12A instead of AW14?
AW12A has a NEMA 4 polycarbonate enclosure, while AW14 is housed in an ABS enclosure with a lower listed degree of protection.
