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MICROSWITCHES - SEALED, POSITIVE BREAK

MICROSWITCHES - SEALED, POSITIVE BREAK

Product catalog summary

Main Specifications:
The PBXR-8325 microswitches feature a double-break snap-action mechanism with electrically separated circuits (form Zb) and double wiping contacts. They have a positive opening action compliant with IEC 60947-5-1 Annex K and offer a very long overtravel of 2 mm after the positive opening position. The protection of the mechanism is rated at IP67 or IP40, and they operate within a temperature range of -50°C to +85°C. The switches are rated from 1mA 4 Vc to 2A 250 Va, with rating codes B300 and Q150, and have a very long mechanical life. They offer a choice of connections and are cURus and CCC approved, meeting applicable railway standards.

Product Variants:
The document lists several product variants, including standard, high force, dual-current, and dual-current high force models. Each variant has specific configurations for degree of protection, connections, and actuators.

Electrical and Mechanical Characteristics:
The switches have a positive opening action with a nominal rating of 2A at 250 Va and 0.6A at 250 Vc. They have a thermal rating of 10A and various mechanical characteristics such as maximum operating force, minimum release force, and differential travel. The mechanical life varies between IP40 and IP67 versions.

Materials and Construction:
The switches are constructed with materials such as PC GF20 for the case, PBT GF17 for the button, silicone rubber for the membrane, and silver alloy for the contacts. Terminals are made of tin-plated brass, and screws and levers are stainless steel.

Additional Specifications:
The document details special connections, levers, and maintained action variants. It also includes information on two-pole DPDT assemblies and IP40 protective covers.

Installation Recommendations:
Recommendations include observing clearances and creepage distances, especially above 125 V and 250 V, where insulating plates are necessary.

Ordering Information:
The document provides guidance on ordering using 8-digit part numbers and specifies the need to define the type of microswitch, degree of protection, connection, actuator, and mounting accessories.

Disclaimer:
The document includes a disclaimer stating that the product information is for informational purposes only and does not constitute a warranty or contractual commitment. Crouzet reserves the right to modify products without notice.

Catalog excerpts

MICROSWITCHES - SEALED, POSITIVE BREAK-1

MICROSWITCHES - SEALED, POSITIVE BREAK PBXR - 8325 › Double-break snap-action mechanism with electrically separated circuits (form Zb) and double wiping contacts › Positive opening action according to IEC 60947-5-1 Annex K › Very long overtravel: 2 mm after the positive opening position › Protection of mechanism: IP67 or IP40 › Operating temperature -50 °C to +85 °C › Ratings from 1mA 4 Vc to 2A 250 Va - Rating codes: B300, Q150 › Very long mechanical life › Choice of connections - Mounting plates and roller lever (pre-assembled or retrofittable) › cURus and CCC approved - Meet applicable railway standards Main specifications W3 (QC 6.3 x 0.8) W3/90B (QC 6.3 x 0.8, folded) W5 (screw + clamp) W5/IP20 (screw + clamp, protected) W1 (screw + washer) W3 (QC 6.3 x 0.8) W3/90B (QC 6.3 x 0.8, folded) W5 (screw + clamp) W5/IP20 (screw + clamp, protected) W1 (screw + washer) Configurations with actuators Electrical characteristics Positive opening action Rating nominal / 250 Va (A) Rating nominal / 250 Vc (A) Rating thermal (A) Mechanical characteristics Maximum operating force (N) Minimum release force (N) Minimum positive opening force (N) Maximum rest position (mm) Operating position (mm) Positive opening position (mm) Maximum total travel position (mm) Differential travel (mm) Operating temperature (° C) IP40 Operating temperature (° C) IP67 Mechanical life - IP40 versions (operations) Mechanical life - IP67 versions (operations) Contact gap (mm) Weight, terminal versions (g) * Contact us Dual-current High force 83255 83255000 Additional specifications - Case: PC GF20 (UL 94-V0 / GWFI 960 °C / GWIT 775 °C) - Button: PBT GF17 (UL 94-V0 / GWFI 960 °C) - Membrane: silicone rubber - Contacts: silver alloy, micro-profile gold alloy on silver alloy, micro-profile (dual-current) - Terminals: Tin-plated brass - Screws: stainless steel - Levers: stainless steel, POM - Degree of protection: IP67 or IP40 (mechanism) - Recommended min actuating speed: 0.1 mm/s - Rated insulation voltage Ui: 400 V - Impulse withstand voltage Uimp: 4 kV - Pollution degree: 3 - Protection against electric shock: 400V (button and actuators of IP67 versions have reinforced insulation) - Dimensional conformity: DIN 41636-6, type F - Fire & Smoke Resistance: EN 45545-2 EL10 class - Certification mar

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MICROSWITCHES - SEALED, POSITIVE BREAK-2

Product adaptations › Special connections: W3 QC tabs with specific folding angles, double QC tabs, W5 without screws, … › Special levers: special shapes and lengths › Maintained action variant (bistable reset switch), with plunger or lever › Two-pole DPDT assemblies with common lever › IP40 protective cover/housing on connections Principles Double break snap-action switch with electrically separated circuits and with positive opening action on NC contacts (21-22) according to IEC 60947-5-1 Annex K Changeover - SPDT (form Zb) Both circuits can be used at opposite polarities Curves Operating curve...

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MICROSWITCHES - SEALED, POSITIVE BREAK-3

Connections W3/90B quick-connect 6.3 x 0.8, 90° downward folding W5 screw with clamp W1 screw with washer W5/IP20 screw with clamp IP20 protection Mounting accessories PT mounting plates with holes 79556204 IP20 screw connection cover 79556165 PE mounting plates with notches 79556205 Snap-on mounting 2 pieces are needed Actuators LG roller lever 79556201 LG PT roller lever + plates with holes 79556202 LG PE roller lever + plates with notches 79556203 R 23.4 1.5±0.35 Mechanical characteristics on roller Maximum operating force (N) Minimum release force (N) Min. positive opening force (N) Maximum...

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MICROSWITCHES - SEALED, POSITIVE BREAK-4

Actuators and mounting accessories PBXR 8325 with referenced accessories Roller lever Mounting plates Accessory kit 83250 Installation recommendations See “Basic technical concepts”. To observe the required clearances and creepage distances in the connection area : - above 125 V: an insulating plate is needed when the switch is mounted on an uninsulated surface. - above 250 V: insulating plates are needed between switches when ganging. How to order Use the 8 digit part numbers when they are defined Other cases, precise: Type of microswitch - Degree of protection - Connection - Actuator* - Mounting...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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