SUBMINIATURE MICROSWITCHES - STANDARD V4D - 8327 › Flexible leaf snap-action mechanism with wiping contacts › Ratings from 0.02 A 24 Vc to 12(6) A 250 Va and 1/4 hp 125-250 Va › ENEC and cURus approved up to +150°C › Housing material complying with IEC 60335-1 for unattended appliances: GWFI 850° C / GWIT 775° C › Mushroom-head button variant for lateral approach up to 45° › Choice of connections with symmetric and asymmetric pinning › Choice of pre-assembled actuators Main specifications Function Connections I (changeover) W2 (solder) I (changeover) W7A5 (QC 2.8x0.5) I (changeover) X1A (PCB, straight, asym) I (changeover) X1S (PCB, straight, sym) I (changeover) X2A (PCB, rear, asym) I (changeover) X3A (PCB, front, asym) I (changeover) W7S (QC 2.8x0.5) R (normally closed) W2 (solder) R (normally closed) W7A5 (QC 2.8x0.5) C (normally open) W2 (solder) C (normally open) W7A5 (QC 2.8x0.5) Electrical characteristics Rating nominal / 250 V AC (A) Rating thermal / 250 V AC (A) Operating range / 5 ➞ 24 V AC/DC (A) Rating ENEC / 250 V AC (A) Rating UL / 125/250 V AC (A) Rating UL / 250 V AC (A) Rating UL / 125 V AC (A) Mechanical characteristics Maximum operating force (N) Min. Release force (N) Maximum total travel force (N) Max. Allowable overtravel force (N) Rest position max. (mm) Operating position (mm) Maximum differential travel (mm) Min. overtravel (mm) Ambient operating temperature (°C) Mechanical life for 2/3 OT (operations) Contact gap (mm) Weight (g) * 10.8 for mushroom-head button ** 9.9 for mushroom-head button Additional specifications - Case, Button: PET GF (UL 94-V0 / GWFI 960 °C / GWIT 775 °C) - Moving blade: beryllium copper - Contacts: silver alloy or gold plated (83278) - Terminals: silver-plated brass - Levers: stainless steel, polyamide roller - Degree of protection: IP40 (mechanism) - Proof tracking index: PTI 250 - Recommended min actuating speed: 0.1 mm/s - Certification marks: Product adaptations › Special stainless steel actuators: special shapes and lengths › Special connections: for PCB (symmetric rear or front: X2S, X3S), quick connect 4.8X0.5, angled, … › Fastening pins › .35 mm diameter fixing holes (SP9802) 2 › elescopic plunger with 3 mm overtravel and adjustable fixing by threaded barrel

Principles Single break snap-action switch Changeover - SPDT (form C) Normally closed - SPST-NC (form B) Normally open - SPST-NO (form A) Curves Operating curve for type 83272 1 Operating curve for type 83270 1 Operating curve for type 83271 Number of cycles Resistive circuit Inductive circuit Mechanical life limit Current in Amps Number of cycles Resistive circuit Inductive circuit Mechanical life limit Current in Amps Number of cycles Resistive circuit Inductive circuit Mechanical life limit Current in Amps Electrical life for low-current type 83278: 5 Vc 1 mA resistive 20000 cycles Total travel...

Mushroom-head button Recommendations for lateral approach max 45° Total travel position = 9.1 max. In order to reduce friction and wear, the actuating ramp shall preferably be of POM, PA, or steel, and also be as smooth as possible. As a general rule, the use of any lubricant substance is not needed nor recommended. For particular cases, please consult us. Connections W7A5 quick-connect 2.8 x 0.5 W7S symmetrical quick-connect 2.8 x 0.5 X1A for PCB asymmetrical, straight output X1S for PCB symmetrical, straight output X3A for PCB asymmetrical, front output X2A for PCB asymmetrical, rear output...

Actuators and mounting accessories Mechanical characteristics Maximum differential travel (mm) Maximum total travel (mm) Minimum release force (N) Maximum operating force (N)

V4D - 8327 microswitches with referenced actuators 83270 Standard product Product made to order

Mushroom-head button Standard product Product made to order

Installation recommendations See “Basic technical concepts” How to order Use the 8 digit part numbers when they are defined Other cases, precise: ype of microswitch - Function - Connection - Actuator* T * if needed Example: 83272 R W2 270E R24.1 Examples of special adaptations Folded lever and fastening pins Telescopic plunger with 3 mm overtravel and with M6 x 0.75 threaded barrel Warning: The product information contained in this catalogue is given purely as information and does not constitute a representation, warrantly or any form of contractual commitment. Crouzet and its subsidiaries reserve...