AirTAC CS1-B Cylinder Reed Switch, B1-B8
Every stocked AirTAC CS1-B switch on one page: 52 order codes, from $12.32. Pick the model, type and connection to see the exact order code and price.
This combination is not a stock order code. Request a quote and we will confirm availability and price.
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the AirTAC CS1-B
The AirTAC CS1-B is a reed cylinder switch for SU, SI, JSI and other cylinders: its normally open reed contact closes when the piston magnet passes. It switches 5 to 240 V AC/DC up to 100 mA (10 W max.), needs no supply of its own and has no leakage current. The standard version has a red LED; the X version has none.
B1 to B8 differ only in the mounting size, matched to the cylinder bore. It is rated IP67 (NEMA 6) and works at -10 to +70 °C.
CS1-B Technical Specifications
| Model | CS1-B |
|---|---|
| Fits | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125, B2: SU63, SI50(63), JSI50(63), B3: SU80, SI80, JSI80, B4: SU100, SI100, JSI100, B5: SU125, JSI125, SGC250, SC250, B6: SI160, B7: SI200, B8: SGC160(200), SC160(200) |
| Contact | Reed, normally open (STSP) |
| Voltage | 5 – 240 V AC/DC |
| Max. current | 100 mA |
| Max. contact rating | 10 W |
| Voltage drop | 2.5 V max. at 100 mA DC |
| Leakage current | None |
| Indicator | Red LED (X: none) |
|---|---|
| Cable | Ø4.0 mm, 2-core, grey oil-resistant PVC (flame-retardant) |
| Max. switching frequency | 200 Hz |
| Shock / vibration | 300 / 90 m/s² |
| Protection circuit | None |
| Sensitivity | 60 – 75 gauss |
| Temperature | -10 to +70 °C |
| Protection | IP67 (NEMA 6) |
Source: AirTAC catalog, CS1-B (B1-B8) reed switch specifications and ordering code.
How the CS1-B Order Code Is Built
| CS1 | Reed switch |
|---|---|
| B1 / B2 / B3 / B4 / B5 / B6 / B7 / B8 | Model: B1 SU32-50, SI32(40), JSI32(40), SGC125, SC125; B2 SU63, SI50(63), JSI50(63); B3 SU80, SI80, JSI80; B4 SU100, SI100, JSI100; B5 SU125, JSI125, SGC250, SC250; B6 SI160; B7 SI200; B8 SGC160(200), SC160(200) |
| blank / X | Type: blank = 2-wire, red LED; X = 2-wire, no LED |
| 020 / 030 / 050 / 100 / C08 / C12 | Connection: 2 m lead (020); 3 m lead (030); 5 m lead (050); 10 m lead (100); M8 connector, 150 mm lead (C08); M12 connector, 150 mm lead (C12) |
All AirTAC CS1-B Order Codes (52)
Each order code links to its own datasheet page. Use Select to load it into the configurator above.
| Order code | Model | Type | Connection | Price | Select |
|---|---|---|---|---|---|
| CS1B1020 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | 2 m lead (020) | $12.73 | |
| CS1B1030 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | 3 m lead (030) | $12.99 | |
| CS1B1050 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | 5 m lead (050) | $14.38 | |
| CS1B1100 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | 10 m lead (100) | $17.90 | |
| CS1B1C08 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B1C12 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, red LED | M12 connector, 150 mm lead (C12) | $16.71 | |
| CS1B1X020 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, no LED (X) | 2 m lead (020) | $12.32 | |
| CS1B1X030 | B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125 | 2-wire, no LED (X) | 3 m lead (030) | $12.99 | |
| CS1B2020 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | 2 m lead (020) | $12.73 | |
| CS1B2030 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | 3 m lead (030) | $12.99 | |
| CS1B2050 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | 5 m lead (050) | $14.38 | |
| CS1B2100 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | 10 m lead (100) | $17.90 | |
| CS1B2C08 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B2C12 | B2: SU63, SI50(63), JSI50(63) | 2-wire, red LED | M12 connector, 150 mm lead (C12) | $16.71 | |
| CS1B2X020 | B2: SU63, SI50(63), JSI50(63) | 2-wire, no LED (X) | 2 m lead (020) | $12.73 | |
| CS1B2X050 | B2: SU63, SI50(63), JSI50(63) | 2-wire, no LED (X) | 5 m lead (050) | $14.38 | |
| CS1B3020 | B3: SU80, SI80, JSI80 | 2-wire, red LED | 2 m lead (020) | $12.73 | |
| CS1B3030 | B3: SU80, SI80, JSI80 | 2-wire, red LED | 3 m lead (030) | $12.99 | |
| CS1B3050 | B3: SU80, SI80, JSI80 | 2-wire, red LED | 5 m lead (050) | $14.38 | |
| CS1B3100 | B3: SU80, SI80, JSI80 | 2-wire, red LED | 10 m lead (100) | $17.90 | |
| CS1B3C08 | B3: SU80, SI80, JSI80 | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B3X020 | B3: SU80, SI80, JSI80 | 2-wire, no LED (X) | 2 m lead (020) | $12.73 | |
| CS1B3X030 | B3: SU80, SI80, JSI80 | 2-wire, no LED (X) | 3 m lead (030) | $12.99 | |
| CS1B3X050 | B3: SU80, SI80, JSI80 | 2-wire, no LED (X) | 5 m lead (050) | $14.38 | |
| CS1B3X100 | B3: SU80, SI80, JSI80 | 2-wire, no LED (X) | 10 m lead (100) | $17.90 | |
| CS1B3XC08 | B3: SU80, SI80, JSI80 | 2-wire, no LED (X) | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B4020 | B4: SU100, SI100, JSI100 | 2-wire, red LED | 2 m lead (020) | $12.73 | |
| CS1B4030 | B4: SU100, SI100, JSI100 | 2-wire, red LED | 3 m lead (030) | $12.99 | |
| CS1B4050 | B4: SU100, SI100, JSI100 | 2-wire, red LED | 5 m lead (050) | $14.38 | |
| CS1B4100 | B4: SU100, SI100, JSI100 | 2-wire, red LED | 10 m lead (100) | $17.90 | |
| CS1B4C08 | B4: SU100, SI100, JSI100 | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B4X020 | B4: SU100, SI100, JSI100 | 2-wire, no LED (X) | 2 m lead (020) | $12.73 | |
| CS1B5020 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, red LED | 2 m lead (020) | $14.96 | |
| CS1B5030 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, red LED | 3 m lead (030) | $15.11 | |
| CS1B5050 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, red LED | 5 m lead (050) | $16.51 | |
| CS1B5100 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, red LED | 10 m lead (100) | $19.97 | |
| CS1B5C08 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $17.44 | |
| CS1B5X020 | B5: SU125, JSI125, SGC250, SC250 | 2-wire, no LED (X) | 2 m lead (020) | $14.38 | |
| CS1B6020 | B6: SI160 | 2-wire, red LED | 2 m lead (020) | $14.96 | |
| CS1B6030 | B6: SI160 | 2-wire, red LED | 3 m lead (030) | $15.11 | |
| CS1B6050 | B6: SI160 | 2-wire, red LED | 5 m lead (050) | $16.51 | |
| CS1B6C08 | B6: SI160 | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $17.44 | |
| CS1B6C12 | B6: SI160 | 2-wire, red LED | M12 connector, 150 mm lead (C12) | $18.83 | |
| CS1B7020 | B7: SI200 | 2-wire, red LED | 2 m lead (020) | $14.96 | |
| CS1B7030 | B7: SI200 | 2-wire, red LED | 3 m lead (030) | $15.11 | |
| CS1B7050 | B7: SI200 | 2-wire, red LED | 5 m lead (050) | $16.51 | |
| CS1B7100 | B7: SI200 | 2-wire, red LED | 10 m lead (100) | $19.97 | |
| CS1B8020 | B8: SGC160(200), SC160(200) | 2-wire, red LED | 2 m lead (020) | $12.73 | |
| CS1B8030 | B8: SGC160(200), SC160(200) | 2-wire, red LED | 3 m lead (030) | $12.99 | |
| CS1B8050 | B8: SGC160(200), SC160(200) | 2-wire, red LED | 5 m lead (050) | $14.38 | |
| CS1B8C08 | B8: SGC160(200), SC160(200) | 2-wire, red LED | M8 connector, 150 mm lead (C08) | $15.32 | |
| CS1B8X020 | B8: SGC160(200), SC160(200) | 2-wire, no LED (X) | 2 m lead (020) | $12.73 |
Need a combination that is not listed? Request a quote.
Where the CS1-B Is Used
End-of-stroke sensing
Signals when the piston reaches either end, so the next step can start.
Mid-stroke positions
Slide the switch along the barrel to detect any intermediate position.
PLC and relay inputs
Wires straight to a PLC input or relay with two wires.
Choosing the Right CS1-B Configuration
Choose the model by cylinder: B1 for SU32-50, SI32(40), JSI32(40), SGC125, SC125; B2 for SU63, SI50(63), JSI50(63); B3 for SU80, SI80, JSI80; B4 for SU100, SI100, JSI100; B5 for SU125, JSI125, SGC250, SC250; B6 for SI160; B7 for SI200; B8 for SGC160(200), SC160(200).
Choose the type: 2-wire, red LED; 2-wire, no LED (X).
Choose the connection: 2 m lead (020); 3 m lead (030); 5 m lead (050); 10 m lead (100); M8 connector, 150 mm lead (C08); M12 connector, 150 mm lead (C12). The C08 and C12 versions end in a 3-pin male straight connector; the mating female cable is ordered separately.
AirTAC CS1-B FAQ
AirTAC B1: SU32-50, SI32(40), JSI32(40), SGC125, SC125, B2: SU63, SI50(63), JSI50(63), B3: SU80, SI80, JSI80, B4: SU100, SI100, JSI100, B5: SU125, JSI125, SGC250, SC250, B6: SI160, B7: SI200, B8: SGC160(200), SC160(200) cylinders.
5 to 240 V AC/DC, up to 100 mA and 10 W max., with a 2.5 V max. voltage drop at 100 mA.
A 150 mm lead ending in an M8 (C08) or M12 (C12) 3-pin male connector. The female cable is ordered separately. 020, 030, 050 and 100 are fixed leads of 2, 3, 5 and 10 m.
No. You can order a single piece. Orders are processed and handed to the carrier within 3-5 business days.
Buying the CS1-B from AirtacDistr
Genuine AirTAC parts
Every order code on this page is the AirTAC factory part number. Specifications follow the AirTAC Products Catalog 2026A. About us
Ready in 3-5 business days
That is our time to process the order and hand it to the carrier. No minimum order: a single piece can be ordered.
14-day returns, 1-year warranty
Return within 14 days of delivery; the buyer pays return shipping. The warranty covers defects not caused by misuse. Return policy
Engineering help
Send your application details and we will confirm the right order code, usually within 7-8 hours. Ask us
Page data checked against the live catalog on 2026-11-11.
Request a Quote for the CS1-B
Send the order code, quantity and destination. We confirm price, stock and lead time, usually within 7-8 hours.