Carling C-Series CA2 breaker — CB-CA2-45AMP
SKU CB-CA2-45AMP
Carling C-Series CA2 circuit breaker. Manufacturer part number: CA2-B0-34-645-321-C.
- Carling part number
- CA2-B0-34-645-321-C
- Color
- Black
- Poles
- 2
- Series
- C-Series
- Amperage
- 45A
- Mounting
- Two 6-32 x 0.195-inch threaded inserts per pole; barriers
- Trip Free
- Yes - trips on overload with actuator held ON
- Actuator Type
- Handle, one per pole
Contact us to confirm availability and shipping time. 30-day returns on unused stocked items. Exclusions apply. Return policy · Shipping policy
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Part-number breakdown
- Reference manual
- Carling C-Series datasheet, UL 1077 Handle Ordering Scheme (p. 6)
- Complete manufacturer part number
- CA2-B0-34-645-321-C
- 1. Series
- C — C-Series
- 2. Actuator
- A — Handle, one per pole
- 3. Poles
- 2 — 2 poles
- 4. Circuit
- B — Series trip (current)
- 5. Auxiliary/alarm switch
- 0 — Without auxiliary switch
- 6. Frequency and delay
- 34 — DC / 50–60 Hz medium
- 7. Current rating code
- 645
- 8. Terminal
- 3 — 1/4-20 stud
- 9. Actuator color and legend
- 2 — Black actuator; white legend
- 10. Mounting / barriers
- 1 — 6-32 × 0.195 in threaded inserts; no barriers
- 11. Agency approval
- C — UL Recognized; CSA Accepted
Product details
- Carling part number
- CA2-B0-34-645-321-C
- Color
- Black
- Poles
- 2
- Series
- C-Series
- Voltage
- Not specified
- Amperage
- 45A
- Mounting
- Two 6-32 x 0.195-inch threaded inserts per pole; barriers
- Trip Free
- Yes - trips on overload with actuator held ON
- Actuator Type
- Handle, one per pole
- Terminal Type
- 1/4-20 Stud
- Agency Approval
- UL 1077 recognized and CSA accepted supplementary protector
- Terminal Torque
- 30-35 in-lb (3.4-4.0 N-m)
- Trip Indication
- Positive OFF-position indication on electrical trip
- Dielectric Strength
- 1,960 V, 50/60 Hz, 1 minute between electrically isolated terminals
- Mechanical Endurance
- 10,000 ON-OFF operations at 6 per minute with rated current and voltage
- Insulation Resistance
- Minimum 100 megohms at 500 VDC
- Operating Temperature
- -40 C to +85 C
- Mounting Hardware Torque
- 7-9 in-lb (0.8-1.0 N-m)
Shipping & returns
- Contact us to confirm availability and shipping time.
- 30-day returns on unused stocked items. Exclusions apply. See policy
- Custom and quoted items are non-returnable once production begins.
Warranty
Backed by the original manufacturer’s warranty plus our workmanship guarantee on assembled harnesses. Contact us with your invoice and we’ll coordinate any covered repair or replacement.
Read the full warranty termsTechnical support
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Our marine electrical team can review your setup and recommend compatible products. Send a photo, a sketch, or your circuit list and we'll come back with a parts list that fits the boat.
Certifications & training
- ABYC-aware build practices
- OEM-grade marine wire & terminals
Additional capabilities are based on hands-on experience building marine wiring systems rather than third-party certification.
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Why buy from Common Ground Marine
- 20+ years building marine wiring harnesses, panels, and shore-power systems.
- Engineers — not a phone tree — review every custom build before parts are cut.
- OEM-grade components: tinned copper, sealed connectors, marine-rated jackets.