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AIRPAX / SENSATA 21946388172 Magnetic Circuit Protector

The Airpax/Sensata 209, 219, 229, and 249 series hydraulic magnetic circuit protectors combine power switching with accurate and reliable circuit protection in a compact, single or multi-pole unit. Designed for branch circuit applications, these protectors utilize the hydraulic-magnetic principle, adapting to local conditions and minimizing nuisance tripping. They withstand high pulses without affecting normal delay curves, making them suitable for diverse industrial environments. Available with various configurations and terminal styles, these circuit protectors offer a versatile solution for power distribution and protection needs.

Authorized Distributors
Source:Newark
Part No:219-4-6388-172
Stock:8
Inv Date:06-08-2026
Price: Unit price: $476.04
Buy/RFQ:
Source:DigiKey
Part No:219-4-6388-172
Stock:0
Inv Date:06-08-2026
Price: Unit price: $446.227
Buy/RFQ:
Part No:219-4-6388-172
Stock:0
Inv Date:06-09-2026
Price: Unit price: $446.23
Buy/RFQ:
Part No:219-4-6388-172
Stock:0
Inv Date:06-08-2026
Price: Unit price: $694.82
Buy/RFQ:
Part No:219-4-6388-172
Stock:8
Inv Date:06-08-2026
Price: Unit price: $512.85
Buy/RFQ:
Part No:219-4-6388-172
Stock:8
Inv Date:06-08-2026
Price: Unit price: $512.85
Buy/RFQ:

AIRPAX / SENSATA 21946388172 Magnetic Circuit Protector Specifications:

  • Series: 209/219/229/249/279
  • Type: Hydraulic Magnetic Circuit Protector
  • Poles: 1-6
  • Terminal Styles: Screw terminals, stud, or solderless connectors
  • Configurations: Various
  • Delay: Standard inertial delay (50/60Hz)
  • Voltage Ratings: Up to 240Vac or 120Vdc
  • Current Ratings: Up to 100 amperes
  • Trip Bar: Internal trip bar opens all poles in overload
  • Handle: Ganged externally for simultaneous actuation
  • Dimension A (1 pole): 1.026 ± .010 [26.06 ± 3.30]
  • Dimension A (2 poles): 2.072 [52.63] Max
  • Dimension A (3 poles): 3.108 [78.94] Max
  • Dimension A (4 poles): 4.144 [105.26] Max
  • Dimension A (5 poles): 5.180 [131.57] Max
  • Dimension A (6 poles): 6.216 [157.89] Max
  • Mounting Insert Depth: .160 MIN. [4.06]
  • Max Screw Depth: .310 [7.87]
  • ISO Thread: 3.0 MM OPTIONAL .220 [5.59]
  • Stud Length (51-100 Amps): .750 ±.062 [19.05 ±1.57]
  • Stud Length (0-50 Amps): .625 ±.062 [15.88 ±1.57]
  • Tolerance: ± .015 [.38] unless noted
  • Units: Dimensions in brackets [ ] are millimeters

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Frequently Asked Questions

Where can I buy AIRPAX / SENSATA 21946388172?

You can click on the BUY or RFQ button to purchase 21946388172 from an authorized AIRPAX / SENSATA distributor.

How do I troubleshoot issues or seek technical support for part 21946388172?

You can download the 21946388172 datasheet or visit the AIRPAX / SENSATA website for support.

Who is the manufacturer of 21946388172?

AIRPAX / SENSATA

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