| Part Number: | CSA | - | 021M |
|---|---|---|---|
| Explanation: |
Series CSA - Vertical limit switch series |
Actuator 001 - Flat plunger |
CSA vertical limit switches combine cast aluminum and reinforced plastic construction with a double-spring contact mechanism and snap-action 1NO+1NC contacts. The IP66 enclosure has three M18×1.5 cable-entry positions. Choose a plunger, bracket roller, rotary lever or flexible spring head to suit the moving target and the available operating travel.
| Model | Actuator | Working dimensions |
|---|---|---|
| CSA-001 | Flat metal plunger | Ø9mm plunger; head dimension 29.7±0.2mm |
| CSA-003 | Transverse roller plunger | Ø12.6×3.8mm metal roller; head dimension 49.5mm |
| CSA-021 | Fixed resin roller lever | Ø18×6.5mm roller |
| CSA-021M | Fixed metal roller lever | |
| CSA-031 | Adjustable resin roller lever | Ø18×6.5mm roller; radius 29.5–72.5mm |
| CSA-031M | Adjustable metal roller lever | |
| CSA-012 | Roller with metal bracket | Ø20×6.5mm metal roller; head dimension 53.08mm |
| CSA-041 | Fixed large rubber roller lever | Ø50×8mm roller |
| CSA-051 | Adjustable large rubber roller lever | Ø50mm roller; radius 29.5–72.5mm |
| CSA-061 | Flexible whisker | Ø1.5mm stainless tip; Ø6.5mm spring |
| CSA-071 | Plastic rod coil spring | Ø3.2mm resin rod; Ø6.5mm spring |
| CSA-081 | Coil spring | Ø6.5mm spring with Ø1.5mm stainless wire |
The common body is 57.6mm wide and 26.8±0.8mm deep. Mounting drawings show 38±0.2mm upper and 52mm lower horizontal dimensions, a 56.7mm vertical dimension and Ø5mm holes. Flexible heads have a 141mm head dimension. Use the individual drawings for mounting geometry, offsets and the full operating envelope.
CSA-021M consists of the CSA series identifier, a hyphen and the complete actuator code 021M. Retain the leading zeros; M is part of the actuator code for metal roller versions. CSA-002 is an additional vertical roller-plunger ordering option.
| Segment | Code | Meaning |
|---|---|---|
| Series | CSA | Vertical limit switch family |
| Actuator | 001 | Flat plunger |
| 002 | Vertical roller plunger | |
| 003 | Transverse roller plunger | |
| 012 | Roller with metal bracket | |
| 021 | Resin roller lever | |
| 021M | Metal roller lever | |
| 031 | Adjustable resin roller lever | |
| 031M | Adjustable metal roller lever | |
| 041 | Large rubber roller lever | |
| 051 | Adjustable large rubber roller lever | |
| 061 | Flexible whisker | |
| 071 | Plastic rod coil spring | |
| 081 | Coil spring |
| Parameter | Value |
|---|---|
| Contact arrangement | 1NO+1NC, snap action; NO terminals 13–14, NC terminals 11–12 |
| Operating speed | 5mm/s–0.5m/s |
| Electrical switching frequency | 30 operations/min |
| Initial contact resistance | 25mΩ maximum |
| Insulation resistance | 100MΩ minimum at 500VDC |
| Minimum load | 24VDC, 10mA |
| Rated insulation voltage Ui | 380V |
| Rated impulse withstand voltage Uimp | 4kV |
| Conventional thermal current Ith | 10A |
| Enclosure protection | IP66 |
| Vibration | 10–55Hz; 1.5mm double amplitude |
| Shock, mechanical durability | 1,000m/s² |
| Shock, malfunction resistance | 300m/s² |
| Operating temperature | -20°C to +70°C, no icing |
| Humidity | Below 95%RH |
| Dielectric test location | Test voltage | Frequency and duration |
|---|---|---|
| Between open terminals of the same polarity | 1,000VAC | 50/60Hz for 1 minute |
| Between current-carrying and non-current-carrying metal | 1,500VAC | |
| Between each terminal and ground |
| Resistive-load test condition | Electrical endurance |
|---|---|
| 240VAC, 3A | More than 500,000 operations |
| 240VAC, 6A | More than 300,000 operations |
| 250VAC, 6A | More than 500,000 operations |
Endurance figures are lower limits at the stated loads, rather than interchangeable estimates of installed service life.
| Voltage | Non-inductive loads | Inductive loads | ||||||
|---|---|---|---|---|---|---|---|---|
| Resistive | Lamp | Inductive | Motor | |||||
| NC | NO | NC | NO | NC | NO | NC | NO | |
| 125VAC | 6A | 1.5A | 0.7A | 3A | 2A | 1A | ||
| 250VAC | 6A | 1A | 0.5A | 3A | 1.5A | 0.8A | ||
| 12VDC | 6A | 3A | 4A | 3A | ||||
| 24VDC | ||||||||
| 125VDC | 0.4A | 0.2A | — | — | — | |||
| 50VDC | ||||||||
These are steady-state current ratings. Inductive loads use an AC power factor of 0.4 or a DC time constant below 7ms. Lamp loads assume inrush up to ten times running current; motor loads assume six times running current. A dash indicates no stated rating.
| Contact | Maximum inrush current |
|---|---|
| NC | 24A |
| NO | 12A |
| Utilization category | Rated current | Rated voltage |
|---|---|---|
| AC-15 | 6A | 250V |
| DC-13 | 0.3A | 220V |
| Declared conformity reference | Standard |
|---|---|
| CCC | GB/T14048.5 |
| CE | EN60947-5-1 |
Obtain configuration-specific documentation where certification evidence is required.
OF is maximum operating force; RF is minimum release force. PT and MD are maximum pretravel and movement differential. OT and TT are minimum overtravel and total travel. Trigger position TP has a ±10% tolerance. Observe the units for each head: linear tip travel and angular movement are different quantities.
| Models | OF | RF | PT | TP ±10% | MD | OT | TT | Actuator conversion angle |
|---|---|---|---|---|---|---|---|---|
| CSA-001, CSA-003, CSA-012 | 8N | 4N | 1.8mm | 2mm | 1.2mm | 4mm | 5.8mm | — |
| CSA-021, CSA-021M, CSA-031, CSA-031M, CSA-041, CSA-051 | 4N | 1N | 20° | 22.5° | 10° | 75° | 95° | 22.5° |
| CSA-061 | 1.5N | 0.5N | 30mm | 22.5° | 14° | 20mm | 50mm | — |
| CSA-071, CSA-081 | 22.5° |
Match the actuator to the target path, leave sufficient overtravel and secure the body using the model-specific mounting drawing. Maintain cable-entry sealing to preserve the enclosure protection. Select the contact load using the applicable resistive, lamp, inductive, motor or utilization-category rating.
These industrial components require separate application assessment for personnel protection, long-term high-reliability systems, harsh outdoor or chemical environments, explosive atmospheres, nuclear, aerospace and military service.
