Product Overview
The 12/13B Thermal Motor Protector is a versatile temperature limiter and thermal cut-out designed for protecting motors, transformers, coils, and electronic components in process automation. It offers non-sensitivity to current, a high current rating up to 30A, and manifold executions, including a special low current version. This protector ensures reliable operation and longevity of protected equipment by preventing thermal damage.
Product Attributes
- Brand: Microtherm (Div. of Microtherm International Cooperation TM)
- Origin: Canada (Canadian Thermostats & Control Devices, Ltd.)
- Certifications: VDE / ENEC, UL, CSA / cUL, CQC
- Approvals: EN 60730-1 / -2-3, UL File Number E46827, C22.2 No. 77 / C22.2 No. 24, GB14536.1-1998 / GB14536.10-1996
- Protection Degrees: IP00 (provided by enclosures)
- Resistances: Tight against ordinary resins and lacquers
- Shock/Vibration Testing: Similar to EN 50155 (400 m/s sine half wave / 100 m/s 5 Hz ... 2.000 Hz sine)
Technical Specifications
| Specification | Details |
|---|---|
| Product Series | 12B / 13B |
| Control Types | Normally Closed (NC), Normally Open (NO) |
| Rated Current at 250 V (50/60 Hz, cos 0.95 / 0.6) |
|
| Switching Cycles under Rated Current |
|
| Max. Current at 250 V (50/60 Hz, cos 0.95) | 30.0 A |
| Switching Cycles under Max. Current | 100 |
| Temperature Rating (Ta) |
|
| Temperature Tolerances | Standard: 5 K |
| Contact Resistance (incl. 100 mm wire) | < 50 m |
| Hysteresis | 30 K 15 K (Note 1: Deviations may occur at Ta limits; for Ta > 130C, hysteresis is 30K -15K/+30K) |
| Dielectric Strength (Standard Insulation) | 2 kV |
| Automatic Action Feature Codes | 1.B.M, 2.B, 1.C (for B12A/E); 1.B (for B12B/G, B13N/T) |
| Standard Wire Specifications | Length: 100 10 mm, Stripped: 6 1 mm |
| Cantherm Lead Wire Options |
|
| Housing and Insulation Options |
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| Marking Example (Microtherm) | B12 A 120 05 L310 100 U253 (Type B12A, 120C response, 5K tolerance, wire leads, 100mm length, insulation U253) |
| Marking Example (Cantherm) | B12A12005AEDCC0E (Type B12A, 120C response, 5K tolerance, wire leads UL3398 20 AWG length D=4" color yellow insulation U103 housing - none strip .25") |
| Self-Heating Diagram | Available (Measured in oil bath, depends on thermal conduction to equipment) |
2410311312_Cantherm-B12A09505AE9CCOE_C17672802.pdf
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