BONITRON M3575R-H33BF
BONITRON M3575R-H33BF
BONITRON M3575R-H33BF
BONITRON M3575R-H33BF
BONITRON M3575R-H33BF
BONITRON M3575R-H33BF
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M3575R-H33BF

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M3575R-H33BF is a Bonitron M3575R standard-duty braking resistor that dissipates regenerative energy from 460–480 VAC drive systems during infrequent or low-duty-cycle braking.
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Technical specifications for M3575R-H33BF

  • Manufacturer:
    BONITRON
  • Part Number:
    M3575R-H33BF
  • Product Family:
    BONITRON
  • Product Type:
    Standard Duty Braking Resistor
  • Stock:
    1
  • Drive System Voltage:
    460–480 VAC
  • Typical Braking Setpoint:
    750 VDC
  • Peak Horsepower:
    33 HP
  • Braking Current RMS:
    13.4 A
  • Peak Braking Current:
    32 A
  • Peak Braking Power:
    24,618 W
  • Continuous Braking Power:
    3,600 W
  • Load Resistance:
    22.5 Ω, ±10%
  • Maximum Duty Cycle:
    20%
  • Maximum On-Time:
    60 s
  • Cooling Fan:
    Thermostatically controlled 115 VAC internal fan
  • Chassis Size:
    B10D
  • Enclosure:
    Enclosed
  • Over-Temperature Contact:
    Normally closed; opens above 71 °C
  • Over-Temperature Contact Rating:
    125 VAC, 15 A resistive; 250 VAC, 10 A resistive; 100,000 cycles
  • Operating Temperature:
    0 to 40 °C
  • Storage Temperature:
    -20 to 65 °C
  • Certifications:
    UL and CUL listed, file E204386
  • Dimensions:
    25.6x25x45.5cm
  • Weight:
    11.74 kg
  • Tariff Code:
    8533290000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Integration Mounting Protection Application
  • Converts regenerative drive energy into heat during controlled deceleration
  • Supports the exact M3575R configuration for fan-cooled standard-duty braking
  • Provides an over-temperature contact for integration with drive or system interlocks

M3575R-H33BF is a remotely mounted resistive load for fixed-DC-bus AC drive braking systems.

Its exact configuration combines the H voltage class, 33 HP rating, B10D chassis and F fan option for applications with infrequent or low-duty-cycle regeneration.

Before installation or replacement, verify the drive braking transistor, minimum resistance, motion-cycle duty, fan supply, interlock circuit and required mounting airflow.

Availability, condition, price, and shipping time for M3575R-H33BF are confirmed during quotation.

Bonitron M3575R-H33BF Standard Duty Braking Resistor Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Pair the resistive load with a drive-integrated or external braking transistor
  • Verify that the selected load is not below the drive minimum permitted resistance
  • Size peak power and braking duty from the actual motion cycle
  • Mount the rear surface against a non-flammable vertical surface
  • Keep airflow paths clear and separate the module from adjacent heat sources
  • Ground the chassis and follow the drive-system conductor and torque requirements
  • Use the normally closed over-temperature contact in the drive or system interlock
  • Confirm that the thermostatic fan receives its option-specific supply
  • Remove power and inspect sizing or wiring if repeated over-temperature operation occurs
  • AC drive systems that regenerate energy during deceleration and risk DC-bus overvoltage
  • Industrial machinery with infrequent or low-duty-cycle regenerative braking
  • Fixed-DC-bus motion-control systems requiring a remote resistive load with a braking transistor
Description
M3575R-H33BF is a Bonitron standard-duty braking resistor in the M3575R family for fixed-DC-bus AC drive systems.

The resistive load converts regenerated drive energy into heat and operates through a correctly sized internal or external braking transistor rather than by direct connection across the DC bus.

Before installation or replacement, confirm the complete catalog number, drive voltage class, minimum permitted resistance, braking duty, fan supply, over-temperature interlock, mounting orientation and clearances.
Alternative Names
M3575R-H33BF Bonitron M3575R-H33BF M3575R Series M3575R-H33BF Bonitron M3575R Series M3575R-H33BF Bonitron M3575R-H33BF Standard Duty Braking Resistor Bonitron M3575R-H33BF Resistive Braking Load Module
Technical notes
M3575R-H33BF requires a correctly sized braking transistor, 115 VAC fan power, vertical mounting and 2 in clearance; confirm drive minimum resistance and duty cycle to avoid overheating or DC-bus overvoltage.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can BONITRON M3575R-H33BF be ordered as a complete braking solution for an existing drive?
M3575R-H33BF is the resistive load, not a complete stand-alone braking controller. Before ordering, confirm that the drive already has a compatible braking transistor or specify the external braking module, interlock wiring and 115 VAC fan supply required by the installation.
Is BONITRON M3575R-H33BF a drop-in replacement for Allen-Bradley 2090-SR020-36?
Bonitron documents the cross-reference, but replacement approval should still compare the actual drive voltage, minimum permitted resistance, peak regenerative energy, duty cycle, fan supply, enclosure space and over-temperature interlock before purchase.
Can a customer shorten the machine deceleration time after installing BONITRON M3575R-H33BF?
Only after recalculating peak braking power, on-time and duty cycle. A shorter stop can exceed the resistor or braking transistor rating even when the resistance value is correct, causing over-temperature trips or damage.
What installation details should be checked before shipping BONITRON M3575R-H33BF to a retrofit site?
Confirm the available mounting surface, vertical orientation, airflow clearance, cable-entry route, protective earth, 115 VAC fan power and over-temperature contact wiring. The product dimensions and 12.25 kg manufacturer weight should also be included in handling planning.
What is normally included when purchasing BONITRON M3575R-H33BF?
The quoted stock item should be treated as the braking-resistor assembly only unless the quotation expressly lists cables, an external braking transistor, mounting hardware or other accessories. Confirm condition and included items before placing the order.
Why might a drive still trip on DC-bus overvoltage after BONITRON M3575R-H33BF is installed?
Common causes include a braking transistor that is missing, disabled or incorrectly wired, a resistance mismatch, excessive regenerated energy, an overly short deceleration command or an open interlock. Diagnose the drive and braking circuit rather than assuming the resistor alone is defective.
What should be checked if BONITRON M3575R-H33BF repeatedly reports or causes an over-temperature condition?
Verify fan power and thermostatic operation, airflow clearance, mounting orientation, resistor value, braking frequency, on-time and ambient temperature. Repeated overheating indicates a sizing, ventilation or control problem that should be corrected before the machine returns to service.