Original Honeywell 1SE1 1SE1-T 5SE1 Sealed Micro Limit Switch

Specs:

Brand: Honeywell
Model: 1SE1 1SE1-T 5SE1

Model 1SE1
Wiring: 3 pre-wired leads (20AWG)
Operating Temperature Range: -53℃ ~ 105℃

Model 1SE1-T
Wiring: Solder tab terminals (Turret solder post)
Operating Temperature Range: -53℃ ~ 105℃

Model 5SE1
Wiring: 3 pre-wired leads
Operating Temperature Range: -26℃ ~ 85℃

Electrical Specs (all models)
Contact Type: SPDT (C Common / NO Normally Open / NC Normally Closed)
Rated Load:
✅ 5A @125/250VAC
✅ 5A resistive / 2.5A inductive @28/30VDC
Contact Material: Standard silver contacts (power circuit; optional gold contacts for weak signals)

Mechanical Specs (same for all three)
Actuator: Direct-press pin plunger
Operating Force (OF): 4.73 N (17 ozf)
Pretravel (PT): 1.27 mm
Differential Travel (DT): 0.1 mm (very small, high positioning accuracy)
Overtravel (OT): 0.076 mm
Spring returns automatically
Housing: Sealed aluminum body, waterproof, meets MIL-S-8805 standard

Dimensional & Mounting Info
Body Size: 22.25 (L) × 8.79 (D) × 18.92 (H) mm
Two Ø3.2 mounting holes on sides, fixed with screws
Sealing Level: Waterproof housing, suitable for oily, damp outdoor equipment

Selection Tips
Low temperature / military / extreme cold outdoor → choose 1SE1 (leads) / 1SE1-T (solder tabs) (-53℃ startup)
Ordinary indoor equipment, temp won’t drop below -20℃ → 5SE1
Limited wiring space, DIY wiring → choose 1SE1-T / 5SE1-T (solder tab versions)
Direct wiring, quick assembly → choose pre-wired 1SE1 / 5SE1

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