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Home > Products > Circuit Protection > Circuit Breakers > LELPK11-31250-150-V
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LELPK11-31250-150-V

Manufacturer Part Number:
LELPK11-31250-150-V
Manufacturer / Brand
Sensata-Airpax
Part of Description:
CIR BRKR MAG-HYDR LEVER
Datasheets:
LELPK11-31250-150-V.pdf
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 31705 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number LELPK11-31250-150-V
Manufacturer / Brand Sensata-Airpax
Stock Quantity 31705 pcs Stock
Category Circuit Protection > Circuit Breakers
Description CIR BRKR MAG-HYDR LEVER
Lead Free Status / RoHS Status: RoHS Compliant
Series LEL
Package Bulk
Number of Poles 2
Mounting Type Panel Mount
Illumination Voltage (Nominal) -
Illumination -
Current Rating (Amps) -
Breaker Type Magnetic (Hydraulic Delay)
Base Product Number LELPK11
Actuator Type Lever

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: Info@IC-Components.com

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Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

What panel mounting and mechanical integration constraints should engineers consider when installing the LELPK11-31250-150-V in a control cabinet?
The LELPK11-31250-150-V is a 2-pole panel mount circuit breaker with lever actuator from the Sensata-Airpax LEL series. Engineers typically cut a rectangular opening sized to the standard LEL mounting footprint and secure it using the provided mounting hardware or threaded bushings. Account for the lever throw clearance in front-panel layouts and ensure rear terminal access for busbars or lugs rated for 150 A continuous operation in AC or DC circuits.
How does the magnetic hydraulic delay mechanism in the LELPK11-31250-150-V behave during high inrush current events like motor startup or capacitive loads?
The hydraulic delay in the LELPK11-31250-150-V allows the breaker to tolerate temporary surge currents without tripping, while still providing rapid magnetic response to short-circuit faults. This characteristic supports applications with transformer or motor inrush profiles that exceed the steady-state 150 A rating briefly, reducing nuisance trips compared to instantaneous magnetic-only devices.
Can the LELPK11-31250-150-V be used in systems with varying ambient temperatures without requiring current derating?
The magnetic (hydraulic delay) trip mechanism of the LELPK11-31250-150-V maintains consistent trip characteristics across a wide temperature range, typically from -40°C to +85°C or broader, because operation depends primarily on current rather than bimetallic thermal expansion. This behavior supports deployment in outdoor enclosures or industrial environments where temperature fluctuates without adjustment to the 150 A rating.
What are the key differences when considering the LELPK11-31250-150-V versus a thermal-magnetic circuit breaker for industrial control panels?
Unlike thermal-magnetic breakers whose overload trip point shifts with ambient temperature, the LELPK11-31250-150-V delivers stable must-hold and must-trip performance independent of enclosure temperature. This leads to more predictable protection curves in variable thermal conditions, though short-circuit response remains fast via the magnetic element in both technologies.
Is the LELPK11-31250-150-V suitable for DC applications, and what integration factors apply for polarity or voltage?
The LELPK11-31250-150-V supports AC or DC operation up to its voltage rating. For DC integration, engineers verify the system's maximum voltage against the breaker's interrupting capacity and note that hydraulic-magnetic devices typically exhibit similar performance in both polarities when properly rated. Terminal torque and conductor sizing must follow 150 A guidelines to maintain contact integrity.
When migrating from an older Airpax or Sensata single-pole model to the 2-pole LELPK11-31250-150-V, what design adjustments are commonly needed?
Switching to the LELPK11-31250-150-V requires updating the panel cutout for the 2-pole width and re-evaluating busbar or wiring layouts for dual-pole interruption. The lever actuator and hydraulic delay characteristics remain consistent within the LEL family, but system coordination studies should confirm that the combined 150 A rating per pole aligns with the previous protection scheme and load distribution.
What reliability considerations arise when using the LELPK11-31250-150-V in long-term industrial or vibration-prone environments?
The LEL series construction, including the hydraulic-magnetic mechanism, provides stable operation under mechanical shock and vibration levels common in industrial settings. Long-term performance depends on maintaining proper mounting torque, avoiding excessive mechanical stress on terminals, and operating within the rated electrical cycles for the lever mechanism.
How should engineers evaluate whether the LELPK11-31250-150-V fits within a replacement strategy for competitive hydraulic-magnetic breakers of similar rating?
Direct replacement evaluation for the LELPK11-31250-150-V involves matching the 2-pole configuration, 150 A rating, lever actuation, and panel mount dimensions, along with delay curve compatibility. Minor differences in terminal style or auxiliary contact options may require adapter hardware or schematic updates, while the core trip behavior stays aligned for equivalent protection coordination.
What configuration or auxiliary considerations apply when integrating the LELPK11-31250-150-V into a monitored control system?
The base LELPK11-31250-150-V model provides manual lever reset without integrated illumination or auxiliary switches. For monitoring, engineers often add external current sensors or voltage monitoring relays downstream, or select LEL variants with optional auxiliary contacts if status feedback to a PLC or SCADA system is required during the design phase.
In what application boundary cases might the hydraulic delay of the LELPK11-31250-150-V limit its use compared to faster-acting protection devices?
The hydraulic delay in the LELPK11-31250-150-V extends tolerance to moderate overloads and inrush, which can delay response in scenarios demanding near-instantaneous interruption for highly sensitive electronics. In such cases, coordination with upstream or downstream fast-acting fuses or electronic circuit protectors helps maintain overall system fault clearing times.

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