GLAA20A1A HONEYWELL PLC Programmable Logic Controller 100–240 V AC 4.5kw
GLAA20A1A Description
The GLAA20A1A is a heavy-duty, industrial-grade global limit switch from Honeywell’s MICRO SWITCH GLA series, engineered for reliable position sensing and motion control in harsh industrial environments. It features a side rotary roller actuator with spring return, DPDT (Double Pole Double Throw) snap-action contact configuration (2NO + 2NC), and a robust die-cast zinc housing with IP67/NEMA 4/12/13 protection. Designed to meet IEC 60947-5-1 standards, it supports 1/2 in NPT conduit connection, screw mounting, and delivers consistent, repeatable switching performance for machine travel limit, interlock, and safety control applications. It is compatible with PLC systems and widely used for global industrial automation equipment.
GLAA20A1A Key Features
- DPDT Snap-Action Contacts: 2NO + 2NC configuration, fast, positive switching with high contact reliability, suitable for direct PLC interface.
- Side Rotary Roller Actuator: Plastic roller with spring return, accepts clockwise (CW) or counterclockwise (CCW) actuation, pre-travel 26°, over-travel 59°, differential travel 12°.
- Heavy-Duty Industrial Protection: IP67 waterproof/dustproof, NEMA 1/4/12/13 rated, resistant to oil, coolant, dust, and low-pressure water jets.
- Modular & Durable Design: Die-cast zinc epoxy-coated housing, long mechanical life up to 15 million operations, low maintenance.
- Wide Operating Temperature: -25°C to +85°C, suitable for extreme industrial environments.
- Global Certifications: CE, UL, CSA, CCC, RoHS compliant for worldwide deployment.
- Easy Installation & Wiring: Screw mounting, 1/2 in NPT threaded conduit entry, secure terminal connections.
- High Electrical Rating: 10A @ 600VAC, 10A @ 250VDC, supports high-power industrial circuits.
GLAA20A1A Materials & Applications
Materials
- Housing: Die-cast zinc alloy with epoxy coating, corrosion-resistant, impact-resistant, UL94 V-0 flame-retardant.
- Actuator Roller: High-strength engineering plastic, wear-resistant, low friction, long service life.
- Contacts: Silver alloy (AgCdO) contacts, high conductivity, anti-oxidation, stable electrical performance.
- Internal Components: Industrial-grade precision snap mechanism, sealed internal structure to prevent dust/moisture ingress.
- Terminals: Nickel-plated brass screw terminals, secure wiring, vibration-resistant.
Typical Applications
- Machine tools: CNC lathes, milling machines, presses, transfer lines, metal fabrication equipment.
- Material handling: Conveyors, elevators, cranes, hoists, forklifts, palletizers.
- Packaging & printing: Labelers, baggers, slitters, winding machines, printing presses.
- Construction machinery: Aerial lifts, boom lifts, excavators, construction vehicles.
- Automotive assembly: Assembly lines, robotic stations, body welding equipment.
- Textile, plastic, food processing machinery, and general industrial automation interlock systems.
GLAA20A1A Important Parameters
| Parameter |
Specification |
| Part Number |
GLAA20A1A |
| Series |
GLA Series (MICRO SWITCH Global Limit Switch) |
| Switch Type |
Side Rotary Roller Actuator, Snap Action |
| Contact Configuration |
DPDT (2NO + 2NC) |
| Electrical Rating |
10A @ 600VAC; 10A @ 250VDC (AC-15, DC-13) |
| Actuation Type |
Spring Return, CW/CCW Rotary |
| Pre-Travel |
26° (travel to operate) |
| Over-Travel |
59° (minimum) |
| Differential Travel |
12° (travel to reset) |
| Operating Force |
0.33 N·m (2.9 in-lb) |
| Mechanical Life |
15,000,000 operations |
| Electrical Life |
1,000,000 operations @ rated load |
| Protection Rating |
IP67; NEMA 1, 4, 12, 13 |
| Conduit Entry |
1/2 in NPT threaded |
| Mounting |
Screw mount (4 mounting holes) |
| Operating Temperature |
-25°C to +85°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
5–95% RH (non-condensing) |
| Dimensions (W×H×D) |
42 × 102.9 × 62 mm |
| Weight |
Approx. 0.45 kg |
| Certifications |
CE, UL, CSA, CCC, RoHS |
| Standards |
IEC 60947-5-1, EN 45545-2 |
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