Micro Switches Catalogue Overview

This document is a technical catalogue presenting various models of micro switches, detailing their specifications, configurations, and ordering information.

1. Product Series and Models

• SM33 Series: Models such as SM33-DM3W1BKH0, SM33-DL3W1BKH0, etc., available on request.
• SM51 Series: Includes models like SM51-DLBKS10, SM51-ELBKS10, SM51-FLBKS10, etc., also available on request.
• SM53 Series: Models such as SM53-DL1BKT0, SM53-EL1BKT0, SM53-FL1BKT0, etc., available on request.
• CS-R18 Series: Models including R18-21A, R18-23A, R18-24A, R18-25A, R18-26A, R18-29B, with silver contacts and various terminal and color options.

2. Technical Specifications

• Current Ratings: Range from 3 A to 20 A depending on the model and voltage rating (e.g., 8 (2) A - 250V AC, 16 (4) A - 250V AC, 20 A - 125V AC).
• Voltage Ratings: Typically 125V AC or 250V AC, with some models rated for specific horsepower loads (e.g., 1/3 HP - 250V AC).
• Operating Temperature: Ratings include T85, T105, and T125 indicating maximum temperature tolerance in Celsius.
• Operating Force: Measured at the knob or lever, values range from 60 g.f. to 350 g.f. depending on the model.
• Contact Ratings: Silver contacts rated at 1A 250 VAC / 3A 125 VAC with insulation resistance of 100 MΩ and contact resistance max 20 MΩ.
• Protection Ratings: IP55 standard for some models; special IP67 versions available on request.

3. Mechanical and Functional Features

• Terminal Types: Various terminal configurations indicated by codes such as 0, 1, 25, S1, Q, T, etc.
• Lever Types: Different lever options (M, L, H) and button colors are available depending on the series and model.
• Switch Functions: Circuit functions include (on)-off, on-(off), on-(on), off-on, off-(on), etc., describing the switching behavior.
• Panel Cut-Outs: Specific panel cut-out dimensions and drilling templates are referenced for installation.

4. Ordering and Availability

• Minimum order quantities (MOQ) are specified: typically 2000 pcs for SM series and 500 pcs for CS-R18 series.
• Many models are available on request, including special amperage ratings and IP67 versions.
• Customers are encouraged to contact the supplier for more information and special requests.

5. Quality and Approvals

• Some models are KEMA approved, ensuring compliance with recognized safety and quality standards.

Summary of Critical Parameters

Parameter	Range / Details
Current Rating	3 A to 20 A (varies by model)
Voltage Rating	125V AC, 250V AC
Operating Temperature	T85, T105, T125
Operating Force	60 g.f. to 350 g.f.
Contact Material	Silver contacts
Contact Ratings	1A 250 VAC / 3A 125 VAC
Insulation Resistance	100 MΩ
Contact Resistance	Max 20 MΩ
Protection Rating	IP55 standard; IP67 special versions available
MOQ	2000 pcs (SM series), 500 pcs (CS-R18 series)

Recommendations and Notes

• Contact supplier for detailed technical support, special amperage versions, and custom configurations.
• Ensure panel cut-out dimensions match the specified drilling templates for proper installation.
• Consider operating force requirements when selecting switches for specific applications.
• Verify compliance with required safety standards and approvals for your application.

This catalogue section provides comprehensive technical data and ordering details for a wide range of micro switches suitable for industrial and electrical applications.