Frequently Asked Questions
What is NMB-MAT 3615KL-05W-B70?
NMB-MAT 3615KL-05W-B70 is a 24 VDC brushless axial cooling fan from the NMB Technologies 3615KL series. The manufacturer catalog specifies a 92 × 92 × 38 mm nominal frame, 0.70 A rated current, 5900 RPM fan speed and 105.9 CFM maximum airflow for the standard B70 performance class.
What is the rated voltage of 3615KL-05W-B70?
The nominal voltage is 24 VDC. The NMB-Minebea series catalog specifies an operating voltage range of 15.0–26.4 VDC for the standard B70 class. Equipment-specific suffixes should be checked against the actual fan label and applicable equipment documentation before installation.
What are the dimensions of 3615KL-05W-B70?
The fan has nominal dimensions of 92 mm wide, 92 mm high and 38 mm deep. The manufacturer drawing identifies a mechanical depth of 38.4 ±0.5 mm and a mounting hole center spacing of approximately 82.5 mm. These measurements should be checked together with the actual mounting frame and lead exit position.
What are the rated current and input power?
The standard B70 configuration is rated at 0.70 A and 16.8 W at a nominal 24 VDC supply. These electrical values are specified in the NMB-Minebea series catalog and supported by distributor records for the -E01 configuration. Verify that the equipment's fan circuit can support this electrical load.
What are the nominal fan speed and maximum airflow?
The standard manufacturer catalog values are 5900 RPM nominal speed and 3.00 m³/min maximum airflow, approximately 105.9 CFM. Certain commercially listed equipment-specific -EQ1 assemblies have different published performance figures. The exact suffix should therefore be checked before using the standard fan data for equipment design or replacement.
What is the maximum static pressure of 3615KL-05W-B70?
The NMB-Minebea series catalog specifies a maximum static pressure of 189 Pa, equivalent to approximately 0.76 inches of water. This maximum pressure rating and the maximum free-air flow rating represent different operating points. Use the fan's pressure-flow curve when assessing an equipment cooling system.
What is the noise level of 3615KL-05W-B70?
The manufacturer's standard B70 series rating is 53.0 dB(A). Acoustic performance may differ with enclosure design, fan mounting, airflow obstruction and specific equipment configurations. Noise values published for custom suffixes should not automatically be substituted for the standard catalog value.
What bearing type does 3615KL-05W-B70 use?
The documented -E01 version uses ball bearings, consistent with distributor specifications. An independently confirmed NMB L10 life expectancy rating for the exact B70 configuration was not established, so bearing-life values from B50 or other 3615KL performance classes should not be treated as universally applicable.
Does 3615KL-05W-B70 use a two-wire connection?
The commercially documented -E00 and -E01 standard versions use two DC power leads. The NMB-Minebea series catalog identifies red as positive and black as negative, using UL1061 AWG26 wire. Equipment-specific variants may include a connector or customized termination. Confirm the complete suffix and wiring before installation.
What is the difference between 3615KL-05W-B70 and 3615KL-05W-B50?
Both are nominal 24 VDC fans with a 92 × 92 × 38 mm frame. The standard B70 class is rated at 0.70 A, 16.8 W, 5900 RPM, 105.9 CFM and 189 Pa. The manufacturer-documented B50 class is rated at 0.24 A, 5.76 W, 4000 RPM, 76.2 CFM and 89.2 Pa. The B70 therefore has substantially higher current consumption, fan speed, airflow and static pressure. These models should not be assumed interchangeable without reviewing the equipment's electrical and cooling requirements.
Is 3615KL-05W-B70 suitable for ABB variable frequency drives?
An industrial spare-parts supplier identifies 3615KL-05W-B70-EQ1 with ABB fan kit reference 3AUA0000059271 for selected ACx550 drive cooling configurations, including certain R1–R4 frames. The reference is equipment-specific and does not establish compatibility with every ABB inverter. Verify the drive model, frame size, existing fan marking, connector and mounting bracket before replacement.
Is 3615KL-05W-B70 discontinued, and what should be checked before ordering?
Commercial sources describe the legacy -E00 version as discontinued and list the -E01 version as no longer available. However, a manufacturer-confirmed universal replacement part number for every 3615KL-05W-B70 suffix has not been established. Before ordering, confirm the complete model number, nominal 24 VDC supply, 0.70 A current, 16.8 W input power, 92 × 92 × 38 mm frame dimensions, 5900 RPM speed, 105.9 CFM maximum airflow, 189 Pa maximum static pressure, ball bearing construction, mounting hole arrangement, wire count, connector, airflow direction and equipment compatibility. For an ABB-specific -EQ1 or other customized version, compare its own technical documentation instead of assuming it is electrically and mechanically identical to the standard -E00 or -E01 configuration.