Omron ZE-QA2-2 Limit Switch
Omron ZE-QA2-2 is a general-purpose enclosed switch with a roller arm lever actuator, SPDT (AC) contacts, and side mounting. Its operating-speed range is 0.02 mm/s to 0.5 m/s, while IP65 protection is specified. Mechanical durability is ten million operations minimum. The ZE-QA2-2 belongs to the ZE Series within the roller lever enclosed switch range from Omron. Its roller arm lever, side-mounting construction, SPDT (AC) contacts, general-purpose classification, IP65 protection, and stated operating-speed range form the main model identity. These specifications separate ZE-QA2-2 from plunger-actuated ZE enclosed switches while retaining the same general series format.
| Brand | Omron |
| Product | Limit Switch |
| Model Number | ZE-QA2-2 |
Omron ZE-QA2-2 Limit Switch – Technical Specifications
| Specification | Value |
|---|---|
| Shape Structure | General purpose |
| Ambient Temperature | −10°C to +80°C (with no icing) |
| Ambient Humidity | General-purpose type: 35% to 85%RH Sealed type: 35% to 95%RH |
| Shock Resistance | Destruction: 1,000m/s2 max. Malfunction: 100 m/s2 max. 50 m/s2 max |
| Degree Of Protection | IP65 |
| Durability | Mechanical: 10,000,000 operations min. Electrical: 500,000 operations min., for 15 A, 250 VAC resistive load |
| Insulation Resistance | 100 MΩ min. (at 500 VDC) |
| Built In Switch | SPDT (AC) |
| Mounting Direction | Side mounting |
| Dielectric Strength | Between terminals of the same polarity: 1,000 VAC, 50/60 Hz for 1 min Between current-carrying metal part and ground: 2,000 VAC, 50/60 Hz for 1 min Between each terminal and non-current-carrying metal part: 2,000 VAC, 50/60 Hz for 1 min |
| Actuator | Roller arm lever |
| Vibration Resistance | Malfunction: 10 to 55 Hz, 1.5-mm double amplitude |
| Operating Speed | 0.02 mm/s to 0.5 m/s |
| Operating Frequency | Mechanical: 120 operations/min Electrical: 20 operations/min |
| Contact Resistance | 15 mΩ max. (initial value) |
| Rated Frequency | 50/60 Hz |
| Weight | Approx. 260 to 280 g |
The Omron ZE-QA2-2 Limit Switch is a general-purpose enclosed switch with a roller arm lever actuator, SPDT (AC) contact form, and side mounting. Operating speed ranges from 0.02 mm/s to 0.5 m/s. Mechanical operation frequency is 120 operations per minute and electrical operation frequency is 20 operations per minute. Initial contact resistance is 15 mΩ maximum, insulation resistance is 100 MΩ minimum at 500 VDC, and frequency is 50/60 Hz. IP65 protection is specified. Mechanical durability is ten million operations minimum, while electrical durability is 500,000 operations minimum under the listed 15 A at 250 VAC resistive-load test condition.
Operating temperature is -10 to 80°C with no icing. Humidity is 35 to 85% RH for the general-purpose type. Malfunction vibration resistance covers 10 to 55 Hz at 1.5 mm double amplitude. Destructive shock resistance is 1,000 m/s² maximum; the source also lists malfunction values of 100 m/s² maximum and 50 m/s² maximum without visible labels separating their conditions. The 15 A at 250 VAC value is therefore kept only as the electrical-durability test condition, not as a separate rated-load claim. The roller arm lever and 0.02 mm/s minimum operating speed are the main differences from the plunger-actuated ZE-Q-2. For that related ZE Series side-mounting model, see ZE-Q-2.
