Honeywell 900B16-0202

Model Series: 900B Series — General Purpose Limit Switch

Product Introduction:
The Honeywell 900B16-0202 is a heavy-duty snap-action limit switch designed for industrial machine control, safety interlocking, and position sensing. It provides reliable ON/OFF switching with a lever actuator for precise mechanical actuation in harsh environments.

Category:
Description

Technical Specifications:

  • Part Number: 900B16-0202
  • Contact Configuration: 1 NO + 1 NC (Single Pole Double Throw — SPDT)
  • Rated Voltage: 250 VAC / 30 VDC
  • Rated Current: 15 A (resistive load)
  • Contact Rating (AC-15): 10 A at 250 VAC
  • Mechanical Life: 10,000,000 operations
  • Electrical Life: 500,000 operations at rated load
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)
  • Degree of Protection: IP67 (dust-tight, waterproof to 1 m submersion)
  • Actuator Type: Heavy-duty roller lever, 100 mm length
  • Terminal Type: Screw terminal, #10-32 stud
  • Enclosure Material: Zinc die-cast alloy, powder-coated
  • Lever Material: Stainless Steel 304

Functional Features:

  • Snap-action mechanism for positive contact switching
  • Pre-wired or field-wirable terminal connections
  • Roller lever reduces side-load wear
  • Sealed enclosure prevents ingress of dust and water

Performance Parameters:

  • Contact Resistance: ≤ 50 mΩ initial
  • Insulation Resistance: ≥ 100 MΩ at 500 VDC
  • Dielectric Strength: 1,500 VAC for 1 minute
  • Operating Speed: 0.1 m/s to 1.0 m/s (lever)
  • Vibration Resistance: 10 g, 10–500 Hz
  • Shock Resistance: 50 g, 11 ms half-sine

Structural Features:

  • Compact rectangular body: 89 mm × 54 mm × 41 mm
  • Roller lever: 100 mm × 12 mm diameter
  • 3/4″ NPT conduit entry (bottom or side)
  • Screw-terminal block with cover

Working Principle:
Mechanical force applied to the roller lever triggers the internal snap-action spring mechanism, causing rapid contact transition from one state to the other. This provides a clean, bounce-free electrical signal regardless of actuator speed.

Key Advantages:

  • IP67 sealing for outdoor and washdown applications
  • 10 million mechanical operations ensure long service life
  • Roller lever accommodates misalignment up to ±5°
  • UL, CSA, CE, and TUV certified

Applicable Industries: Material handling, packaging machinery, food processing, HVAC, conveyor systems, automotive assembly lines

Installation Requirements:

  • Mount using two #10 screws or DIN rail clip
  • Conduit entry must use provided gland fitting
  • Wire gauge: 14 AWG to 10 AWG (solid or stranded)
  • Lever orientation must match direction of actuation

Usage Notes:

  • Do not exceed rated current or voltage
  • Verify lever travel is not obstructed
  • Periodic inspection of roller for wear recommended every 500,000 cycles
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