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Home > Products > Circuit Protection > Circuit Breakers > 30525-50
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30525-50

Manufacturer Part Number:
30525-50
Manufacturer / Brand
Littelfuse Inc.
Part of Description:
CIRCUIT BREAKER 50A TYPE 2
Datasheets:
30525-50.pdf
Lead Free Status / RoHS Status:
RoHS non-compliant
Stock Condition:
New original, 41956 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number 30525-50
Manufacturer / Brand Littelfuse Inc.
Stock Quantity 41956 pcs Stock
Category Circuit Protection > Circuit Breakers
Description CIRCUIT BREAKER 50A TYPE 2
Lead Free Status / RoHS Status: RoHS non-compliant
Series -
Package Bulk
Number of Poles 1
Mounting Type -
Illumination Voltage (Nominal) -
Illumination None
Current Rating (Amps) 50A
Breaker Type -
Approval Agency -
Actuator Type Automatic Reset

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.

PayPal:

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

BANK TRANSFAR (Telegraphic Transfer)

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

Can 30525-50 be used on a load with high startup inrush, such as a motor, compressor, or capacitive input stage?
30525-50 can work in inrush-heavy circuits if the normal load current and transient profile stay within its trip behavior, but the automatic-reset function can create repeated cycling if the surge is long or frequent. For 30525-50, engineers usually validate the worst-case startup current, duration, and ambient temperature under real operating conditions before committing to the design. If the load has large repetitive inrush, it is often useful to compare the breaker behavior against a time-current profile and also check whether downstream electronics tolerate repeated re-energizing after a trip.
Is 30525-50 suitable for DC battery systems, or is it better only for AC circuits?
30525-50 is described as an AC/DC automatic-reset circuit breaker, so it can be considered for DC protection use cases, but the complete system voltage, available fault current, and arc-extinguishing behavior still need verification from the full device documentation. For 30525-50 in battery-powered equipment, designers typically confirm the maximum DC bus voltage, prospective short-circuit current, and wiring inductance so the breaker can interrupt faults safely in the actual installation rather than only at the nominal current rating.
How does the automatic-reset behavior of 30525-50 affect unattended equipment or remote installations?
30525-50 automatically returns to service after a trip, which can be useful in remote or hard-to-access equipment where manual intervention is inconvenient. In unattended systems, that same behavior can also cause intermittent fault conditions to reappear repeatedly if the underlying problem is not cleared. For 30525-50, many designs add fault logging, current monitoring, or a supervisory control strategy so the equipment can distinguish a temporary overload from a persistent fault that should remain isolated.
Can 30525-50 replace a fuse or a manual-reset breaker in an existing design?
30525-50 can be a practical replacement when the system benefits from resettable protection, but the swap is not always drop-in. Compared with a fuse, 30525-50 will typically change the recovery behavior after an overload and may alter the thermal profile of the branch circuit. Compared with a manual-reset breaker, 30525-50 removes the need for service intervention after a trip, which can be desirable in distributed equipment. For 30525-50, the usual migration check includes trip characteristics, physical fit, wiring termination, fault interruption capability, and whether automatic reclose is acceptable for the load and the control strategy.
What should I check before using 30525-50 in a design with tight thermal margins or a warm enclosure?
30525-50 should be evaluated at the actual enclosure temperature, not only at room temperature, because breaker behavior shifts as the ambient temperature rises. In warm cabinets, nearby heat sources, conductor bundling, and restricted airflow can make a 50A device operate closer to its trip threshold during steady load. For 30525-50, engineers often validate continuous current under worst-case ambient conditions and leave margin for production variation, wiring losses, and long-duration loading so nuisance trips do not appear after installation.
Is 30525-50 a good choice for sensitive electronics that cannot tolerate power interruption?
30525-50 provides overcurrent protection, but it does not manage ride-through or power-quality issues by itself. In systems with PLCs, controllers, or communication equipment, a trip from 30525-50 can create a complete power loss rather than a graceful shutdown. That means the breaker is usually best used as branch protection, while sensitive loads may also need hold-up capacitance, sequencing, or a controlled shutdown path if uninterrupted operation is required after a fault event.
How do I compare 30525-50 against another 50A breaker from Littelfuse or a different brand during redesign?
When comparing 30525-50 to another 50A part, the current rating alone is not enough. For 30525-50, the usual engineering comparison includes trip response under overload, automatic-versus-manual reset behavior, AC/DC capability, interrupting performance, terminal style, dimensional compatibility, and environmental approvals. Two breakers with the same nominal current can behave very differently under inrush, so a redesign should use the full device curves and application test results instead of only matching the 50A label.
What reliability checks make sense for 30525-50 in industrial equipment that runs for years?
For 30525-50 in long-life industrial use, designers commonly check contact heating, vibration exposure, repeated trip/reclose cycles, and corrosion risk at the connection points. Automatic-reset devices can accumulate wear if the circuit operates near the trip threshold or if faults occur repeatedly, so it is useful to review expected duty cycle and maintenance intervals. With 30525-50, qualification testing usually includes endurance under representative load, elevated temperature operation, and fault recovery behavior to confirm that the protection remains predictable over time.

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30525-50

Littelfuse Inc.

CIRCUIT BREAKER 50A TYPE 2

In Stock: 41956

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