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Best Alternatives to RL30-500

Package: Radial LeadedRUILONCircuit ProtectionOperating Voltage (Max): 30VHold Current: 5ATrip Current: 10AMax Fault Current (Imax): 40ATypical Power Dissipation: 3W

Finding a substitute for the RUILON RL30-500 PTC resettable fuse requires matching its 30V rating, 5A hold current, and radial package. Alternatives exist but often have higher current ratings that demand careful engineering review.

AI replacement insight

Electrical riskhigh

All candidates have higher hold currents, which weakens the designed overcurrent protection.

Package risklow

Candidates share the same radial leaded package, ensuring physical compatibility.

Can it be replaced directly?

No direct, drop-in replacement for the RL30-500 has been identified. All potential alternatives require a review of their current ratings.

Best replacement path

Seek a PTC fuse with a 5A hold current, 30V rating, and radial package. If unavailable, evaluate JK30-700, accepting a higher 7A hold current after circuit analysis.

Main risk

Reduced circuit protection due to higher hold and trip currents in all available alternatives.

Recommended alternatives

3
RL30-800 package
RL30-800

RUILON

Needs validationhigh risk

A PTC fuse with matching package and voltage, but a significantly higher hold current (8.0A) that requires circuit validation.

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Alternative comparison matrix

Feature / factorRL30-500RL30-800RL30-900JK30-700Compatibility / risk
PackageRadial LeadedRadial LeadedRadial LeadedRadial LeadedRadial Leaded — Form factor matches.; RL30-900: Form factor matches.; JK30-700: Form factor matches.
Voltage30.0V30.0V30.0V30.0V30.0V — Voltage rating matches.; RL30-900: Voltage rating matches.; JK30-700: Voltage rating matches.
Current10A16A18A14A16A / 18A / 14A — Trip current is significantly higher.; RL30-900: Trip current is significantly higher.; JK30-700: Trip current is higher.

Application & sourcing insights

Questions & answers

There are no direct drop-in replacements found. Candidates like RL30-800 or JK30-700 are functionally similar but have higher hold currents (8A or 7A vs 5A), which reduces circuit protection and requires engineering review.