2-Pole (2P) 20A DC Miniature Circuit Breaker — 500V DC, 6kA
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SKU: CTDC5-63202
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The GDDC5-63 2-Pole 20A DC Miniature Circuit Breaker (MCB) is designed for precise overload and short-circuit protection in two-pole DC circuits up to 500V DC. This 20A model is ideal for medium-current branch protection in photovoltaic arrays, battery energy storage systems, telecom DC distribution, and industrial DC control panels. With a footprint of 36 mm width, it supports infrequent manual switching under normal conditions and features a front contact position indicator for quick operational status checks. For other system configurations, matching 1P (250V DC) and 4P (1000V DC) versions are available.
Electrical Features
| Poles | 2P (two-pole) — optional: 1P / 4P |
|---|---|
| Rated current (In) | 20 A (this model) — also available: 6, 10, 16, 32, 40, 50, 63 A |
| Rated voltage (Ue) | 500 V DC |
| Insulation voltage (Ui) | 1000 V DC |
| Breaking capacity (Icu) | 6 kA |
| Impulse withstand (Uimp) | 6 kV |
| Dielectric test | 2 kV for 1 minute |
| Trip characteristics | Thermal-magnetic • B / C / D curves (resistive to inrush-heavy loads) |
| Auxiliary frequency | 50/60 Hz |
| Protection | IP20 (finger-safe), contact position indicator |
| Service life | Electrical up to 8,000 ops • Mechanical up to 10,000 ops |
Mechanical & Installation
| Mounting | 35 mm DIN-rail (EN60715) |
|---|---|
| Wiring | Cable / U-type busbar / Pin-type busbar |
| Max conductor size | Up to 25 mm² copper |
| Terminal torque | 2.5 Nm (typical) |
| Ambient operating range | −40 °C to +70 °C |
| Storage temperature | −25 °C to +70 °C |
Dimensions (mm)
| Version | Width | Height | Depth |
|---|---|---|---|
| 1-Pole (1P) | 18 | 82 | ~70 |
| 2-Pole (2P) | 36 | 82 | ~70 |
| 4-Pole (4P) | 72 | 82 | ~70 |
Applications
- PV string and combiner-box protection (500V DC, 2P)
- Battery energy storage (BESS) branch circuits
- Telecom & networking DC distribution
- Industrial control cabinets and DC drives
Why Conversions Tech
- Robust 6kA fault clearing for DC systems
- 36 mm width for optimal panel space management
- Curve options (B/C/D) to match load profiles
- Compliant with IEC/EN60947-2 for global safety standards
Why Pros Buy Direct from Conversions Tech
Engineered in the USA. Our U.S.-based engineering team designs and specifies our core product lines, and every product we carry — designed in-house or built to our exact specifications by certified partner factories — is quality-verified before it ships. UL/CSA listed where required, NEC compliant.
Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.
Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.
Fast US fulfillment. Orders in by 2PM ET ship same day from our US warehouse, nationwide ground and expedited.
