Frequently Asked Questions
What is NMB-MAT 3610PS-20T-B30?
NMB-MAT 3610PS-20T-B30 is an AC axial cooling fan from the NMB Technologies 3610PS series. The manufacturer-documented complete model is 3610PS-20T-B30-B00. It is designed for a nominal 200 VAC supply at 50Hz or 60Hz and has a 92 × 92 × 25 mm nominal frame.
Is 3610PS-20T-B30 an AC fan or DC fan?
It is an AC axial fan, not a DC fan. NMB classifies the complete -B00 model under its AC Axial Fans product category and specifies 200 VAC. It should not be substituted for a 12 VDC or 24 VDC fan in the 3610KL series merely because the frame dimensions are similar.
What is the rated voltage and operating frequency?
The nominal supply is 200 VAC, with manufacturer specifications provided separately for 50Hz and 60Hz operation. The published starting voltage is 130 VAC for both frequency records. The starting-voltage specification does not mean that 130 VAC is the recommended continuous operating supply; use the nominal rating and applicable manufacturer requirements.
What are the dimensions of 3610PS-20T-B30?
NMB specifies a nominal frame size of 92 mm wide, 92 mm high and 25 mm deep. DigiKey gives approximately 92.5 × 92.5 × 25 mm as the outside dimensions. Confirm the mounting-hole pattern, frame clearance and terminal position before replacing an installed fan.
What is the rated current at 50Hz and 60Hz?
At 50Hz, the manufacturer specifies 0.10 A. At 60Hz, the specified current is 0.08 A. The current is frequency-dependent, so the correct value should be used when checking the fan supply circuit and electrical load.
What is the input power of 3610PS-20T-B30?
The manufacturer's product records list 13 W at 50Hz and 10 W at 60Hz, with a published input-power tolerance of +10% / -20%. These are the correct frequency-specific power values; multiplying the AC RMS voltage by current does not necessarily give the real input power because power factor must also be considered.
What is the fan speed at 50Hz and 60Hz?
NMB specifies 2600 RPM at 50Hz and 3100 RPM at 60Hz. The difference is expected for this AC motor design and means that the operating frequency should be identified when evaluating cooling performance or selecting a replacement.
What is the maximum airflow of 3610PS-20T-B30?
The manufacturer's current product records list 28.6 CFM, or 0.80 m³/min, at 50Hz and 35 CFM, or 0.98 m³/min, at 60Hz. Some older distributor records use slightly different CFM figures, but the values above follow NMB's current published product specifications.
What is the maximum static pressure?
NMB lists a maximum static pressure of 43.2 Pa, or 0.17 inches of water, at 50Hz. At 60Hz, the maximum static pressure is 60.8 Pa, or 0.24 inches of water. Maximum free-air flow and maximum static pressure represent separate operating points on the fan curve and are not achieved simultaneously.
What bearing type and expected life does 3610PS-20T-B30 use?
The documented -B00 model uses ball bearings. NMB's current 50Hz and 60Hz product pages both list an L10 expected life of 100,000 hours at 25°C. DigiKey's legacy attributes separately show a 50,000-hour reference at 25°C. When life expectancy matters for equipment maintenance planning, use the specific manufacturer's published rating and verify the operating conditions.
Does 3610PS-20T-B30 have wires or electrical terminals?
DigiKey identifies the complete -B00 model as having two electrical terminals. The standard listing does not specify a separate tachometer, locked-rotor alarm or PWM signal connection. Because this is a 200 VAC component, terminal wiring, insulation, isolation, protective measures and electrical installation must be handled by appropriately qualified personnel.
Is 3610PS-20T-B30 discontinued, and what should be checked before ordering?
NMB identifies 3610PS-20T-B30-B00 as a legacy part number that is not recommended for new designs and lists 09225PB-B0L-EA-00 as its newer designation. DigiKey lists the legacy model as obsolete and identifies the successor as manufacturer-recommended. Before ordering, confirm the full model suffix, 200 VAC nominal voltage, 50Hz or 60Hz frequency, two-terminal connection, 92 × 92 × 25 mm frame, ball bearing construction, appropriate frequency-specific current, input power, RPM, airflow, static pressure, mounting requirements and the equipment's electrical safety provisions. Verify the new model's connection arrangement and mechanical fit before replacement.