ETM1-63DC Non-Polarity DC Miniature Circuit Breaker (6A-63A)
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| Product Family ID | OS-ETK-ETM1-63DC |
|---|---|
| Variant SKU Count | 9 |
| Supplier | ETK |
| Supplier Model | ETM1-63DC |
| Product Type | MCB / Circuit Breaker |
| Available Current Ratings | 10A / 16A / 20A / 25A / 32A / 40A / 50A / 63A / 6A |
| Available Voltage Ratings | 300V |
| Rated Voltage | 300V |
| Rated Current | 10A / 16A / 20A / 25A / 32A / 40A / 50A / 63A / 6A |
| Operating Temperature | -25°C ~ +55°C |
| Poles | 1P |
| Rated Current | 6,10,16,20,25,32,40,50,63A / 10A / 16A / 20A / 25A / 32A / +4 more |
| Rated Voltage | 300V |
| System Voltage | 300V |
Product Overview
Non-polarity DC MCB in 9 current ratings from 6A to 63A at 300V DC for auxiliary DC supply circuits, battery branch protection, and low-voltage DC distribution in PV and storage systems. The non-polarity design eliminates installation errors in DC circuits where polarity conventions may not be consistently observed.
Typical applications include battery bank branch protection in small storage systems, auxiliary DC supply distribution inside inverter cabinets or combiner boxes, and DC control circuit protection at 12V, 24V, or 48V.
The ETM1-63DC variant carries a DC circuit interruption rating alongside the standard AC rating, making it suitable for hybrid applications where the same breaker may need to interrupt both AC and DC circuits. Verify rated DC voltage and pole count before applying in pure-DC applications to confirm the interrupting capacity is adequate.
Applications
PV string and array protection
Combiner box internal protection
Inverter DC input circuits
Utility and C&I solar BOS
Frequently Asked Questions
Which applications use ETM1-63DC?
Battery bank branch protection, inverter cabinet auxiliary DC supply, combiner box control power, and DC auxiliary circuits in storage systems. For high-voltage PV string protection, select a breaker with the appropriate string voltage rating — this family is rated at 300V DC.
What pole configuration is available?
ETM1-63DC is primarily a single-pole device. If your application requires a 2-pole or 4-pole format for the same current range, share the circuit details at RFQ and we confirm whether this family covers the requirement.
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