Description
The ST24B3 (Manufacturer Part Number: 19030616A) is a high-reliability DC axial cooling fan manufactured by Comair Rotron. It is widely deployed across industrial automation environments, control cabinets, power distribution equipment, and electronics enclosures to provide active thermal management and prevent overheating of sensitive hardware components.
Technical Specifications
| Parameter | Value |
| Manufacturer | Comair Rotron (Ametek) |
| Manufacturer Part Number (MPN) | 19030616A (Alias: ST24B3) |
| Fan Type | DC Axial Fan |
| Dimensions | 80 mm × 80 mm × 32 mm (8032 profile) |
| Operating Voltage | 24 VDC |
| Current Rating | 0.14 A |
| Power Consumption | ~3.3 W – 3.4 W |
| Speed | 3,400 RPM |
| Airflow | 32 CFM (Cubic Feet per Minute) |
| Static Pressure | 0.23 in H_2O |
| Noise Level | ~40.9 dB(A) |
| Termination Type | 2-wire lead configuration |
| Operating Temperature | Standard industrial range |
Supply Terms & Commercial Details
- Availability: Widely stocked by industrial surplus suppliers, electronic component distributors, and thermal management specialists.
- Lead Time: In-stock units typically ship within 1 to 3 business days.
- Warranty: Standard 1-year to 2-year supplier or manufacturer warranty covering functional defects.
- Condition: Available as New Factory Original, Surplus, or Never Used Original Packaging.
Engineering & Integration Guidance
When installing or replacing the ST24B3 fan inside a control cabinet or chassis rack, consider the following best practices:
- Airflow Direction: Verify the directional airflow arrow printed on the fan housing prior to mounting. Ensure it matches the cabinet’s thermal ventilation scheme (exhausting hot air out or pulling ambient air inward).
- Power Polarity: Observe correct DC polarity (+24V and Common/Return) when connecting the 2-wire leads to prevent reversing motor rotation or stalling the impeller.
- Preventative Maintenance: Monitor fan vibration and acoustic profile periodically; industrial fans operating in continuous duty cycles typically require replacement every 3 to 5 years to maintain optimal cabinet cooling.
Frequently Asked Questions
What is the primary application of the ST24B3?
It is used for forced-air cooling in electronic enclosures, industrial control panels, power supplies, and processor racks to dissipate heat generated by dense automation hardware.
Are there direct cross-reference substitutes available?
Yes. Equivalent 80x80x32mm 24VDC axial fans matching these physical dimensions and airflow ratings (such as select models from Orion Fans) can serve as functional substitutes if necessary, though verifying current and connector compatibility is recommended.
