Carling Technologies
Marine electrical switches, circuit breakers, ELCIs, battery disconnects, and digital switching systems from a Littelfuse brand.
Carling Technologies is a Littelfuse brand and a leading manufacturer of marine switching and circuit-protection products. Its marine lineup includes Contura rocker switches, hydraulic-magnetic and thermal circuit breakers, equipment leakage circuit interrupters (ELCIs), battery disconnect switches, and digital power-management systems for recreational, commercial, and specialty vessels.
Products from Carling Technologies
192 products
Carling TechnologiesAA1-B0-34-415-9D1-C
Carling A-Series 1.5A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-415-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-01.5A-SP
$23.82
Carling TechnologiesAA1-B0-34-420-9D1-C
Carling A-Series 2A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-420-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-02A-SP
$23.82
Carling TechnologiesAA1-B0-34-430-9D1-C
Carling A-Series 3A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-430-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-03A-SP
$23.82
Carling TechnologiesAA1-B0-34-450-6N1-C
Carling A-Series 5A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-450-6N1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-Y05AMP
$13.64
Carling TechnologiesAA1-B0-34-450-9D1-C
Carling A-Series 5A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-450-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-05A-SP
$23.82
Carling TechnologiesAA1-B0-34-460-9D1-C
Carling A-Series 6A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-460-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-06A-SP
$23.82
Carling TechnologiesAA1-B0-34-470-9D1-C
Carling A-Series 7A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-470-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-07A-SP
$23.82
Carling TechnologiesAA1-B0-34-610-6N1-C
Carling A-Series 10A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-610-6N1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-Y10AMP
$13.64
Carling TechnologiesAA1-B0-34-610-9B1-C
Carling A-Series 10A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-610-9B1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-10A-SPW
$23.82
Carling TechnologiesAA1-B0-34-610-9D1-C
Carling A-Series 10A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-610-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-10A-SP
$23.82
Carling TechnologiesAA1-B0-34-615-9D1-C
Carling A-Series 15A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-615-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-15A-SP
$23.82
Carling TechnologiesAA1-B0-34-620-9D1-C
Carling A-Series 20A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-620-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-20A-SP
$23.82
Carling TechnologiesAA1-B0-34-625-9D1-C
Carling A-Series 25A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-625-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-25A-SP
$23.82
Carling TechnologiesAA1-B0-34-630-6N1-C
Carling A-Series 30A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-630-6N1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-Y30AMP
$13.64
Carling TechnologiesAA1-B0-34-630-9D1-C
Carling A-Series 30A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-630-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-30A-SP
$23.82
Carling TechnologiesAA1-B0-34-640-8N1-C
Carling A-Series 40A single-pole hydraulic-magnetic supplementary protector. MPN AA1-B0-34-640-8N1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-Y40AMP
$13.64
Carling TechnologiesAA1-B0-34-640-9D1-C
Carling A-Series 40A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-640-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-40A-SP
$23.82
Carling TechnologiesAA1-B0-34-640-9G1-C
Carling A-Series 40A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-640-9G1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-40A-SPR
$13.64
Carling TechnologiesAA1-B0-34-650-9D1-C
Carling A-Series 50A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-650-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-50A-SP
$24.70
Carling TechnologiesAA1-B0-34-650-9G1-C
Carling A-Series 50A single-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA1-B0-34-650-9G1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA1-50A-SPR
$13.64
Carling TechnologiesAA2-B0-34-410-5D1-C
Carling A-Series 1A double-pole hydraulic-magnetic supplementary protector with straight terminals. MPN AA2-B0-34-410-5D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA2-1AMP
$136.18
Carling TechnologiesAA2-B0-34-475-5D1-C
Carling A-Series 7.5A double-pole hydraulic-magnetic supplementary protector with straight terminals. MPN AA2-B0-34-475-5D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA2-7.5AMP
$136.18
Carling TechnologiesAA2-B0-34-610-9D1-C
Carling A-Series 10A double-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA2-B0-34-610-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA2-10A-SP
$55.30
Carling TechnologiesAA2-B0-34-615-9D1-C
Carling A-Series 15A double-pole hydraulic-magnetic supplementary protector with slant terminals. MPN AA2-B0-34-615-9D1-C. UL 1077 Recognized; CSA Accepted.
SKU CB-AA2-15A-SP
$48.45
Choose Carling switches and circuit protection
Match each component to the vessel's system voltage, circuit type, continuous and interrupt ratings, pole configuration, trip curve, actuator style, and environmental requirements. For replacement switches, also verify the cutout, terminal arrangement, lamp voltage, legend, and maintained or momentary action.
Ask about product compatibilityMarine controls built around the complete circuit
A switch or breaker must match both the electrical load and the installation. Review conductor protection, available fault current, leakage-protection requirements, panel fit, environmental exposure, and applicable marine standards before selecting a replacement or designing a new panel.
- Contura rocker switches in maintained and momentary circuit configurations
- Hydraulic-magnetic and thermal circuit breakers for AC and DC applications
- ELCIs for shore-power leakage protection at the vessel
- Battery disconnects and digital switching for onboard power control
Frequently asked questions
What does Carling Technologies make for boats?
Carling Technologies manufactures marine rocker switches, toggle and pushbutton controls, hydraulic-magnetic and thermal circuit breakers, equipment leakage circuit interrupters, battery disconnect switches, power distribution equipment, and digital switching systems.
How do I identify a replacement Carling rocker switch?
Check the complete part number and confirm the switch series, pole and throw configuration, maintained or momentary action, terminal arrangement, actuator and legend, lamp voltage, electrical ratings, and panel cutout. Similar-looking Contura switches can have different internal circuits.
What is the difference between a marine circuit breaker and an ELCI?
A circuit breaker protects conductors and equipment against overcurrent. An ELCI also monitors current imbalance between conductors and disconnects shore power when leakage exceeds its trip threshold. The required ratings and installation location must be verified for the vessel.
Is Carling Technologies part of Littelfuse?
Yes. Littelfuse completed its acquisition of Carling Technologies in 2021, and Carling Technologies is presented as a Littelfuse brand.
Need a quote on Carling Technologies gear?
Tell us what you're building. Our team will spec the right kit for your install and send a written quote.
Why buy from us
We carry this brand because it earns its place on the boat.
Stocked for marine builds
We focus on parts that meet the conditions boats see — not just whatever ships fastest.
Engineering review on request
Send a parts list or a layout and we'll check it against your boat before you order.
Direct from our team
Pricing, availability, and product questions all go through the same people who build custom harnesses and panels.