Mini Circuit Breaker(MCB)
DZ47Z-63 Solar MCB
The DZ47Z-63 Solar MCB is a DC miniature circuit breaker designed for over-current protection in direct current control...
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Solution
DC Side Protection for Solar and Storage
The DC side of a PV or storage system needs devices specified for direct current, not AC devices used out of context. The DZ47Z-63 series is rated for DC 12V to DC 1000V with 1200V DC insulation and a 4.5kA ultimate brea
Why This Exists
The Situation It Addresses
The DC side of a PV or storage system needs devices specified for direct current, not AC devices used out of context. The DZ47Z-63 series is rated for DC 12V to DC 1000V with 1200V DC insulation and a 4.5kA ultimate breaking capacity, and sits on the same DIN rail as the AC devices in the rest of the installation.
Process
How It Runs Step by Step
- String dataCollect string voltage, current and the earthing arrangement of the array.
- RatingSelect the DC breaker rating from the 1A to 63A range against the string current.
- Pole countChoose 1P to 4P depending on which conductors must be broken.
- IsolationAdd a disconnector where maintenance isolation is required separately from protection.
- SurgeFit surge protection at the point specified for the array and inverter.
- EnclosureMount in a combiner box or IP65 enclosure suited to the installation location.
Outcome
What You End Up With
A DC side protected with devices rated for DC duty, sourced alongside the AC distribution devices for the same project.
Products Used in This Solution
Distribution box
Water Proof Distribution Box
The Water Proof Distribution Box is an all-packaged, surface-mounted plastic enclosure designed for indoor and outdoor...
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Surge Protector Device (SPD)
SPD
The Htst1-c series surge protector (SPD) is designed for AC 50/60Hz, 380V and below power systems including TT, IT,...
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Dis-connector circuit breaker
HTH2-125 Disconnector circuit breaker
For panel builders and installers, it replaces a standard MCB when a disconnect function is needed without adding a...
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Questions About This Solution
Why can an AC MCB not be used on a DC string
A DC circuit has no current zero crossing, so the arc does not self extinguish. DC rated devices are built to break that arc.
What voltage range does the DC series cover
DC 12V to DC 1000V operation with a rated insulation voltage of 1200V DC.
What breaking capacity is available
The ultimate breaking capacity is 4.5kA with 100 percent service breaking capacity.
How many poles should be broken
That depends on the array earthing arrangement. Send the single line diagram and we will advise.
Do you supply the combiner enclosure as well
Yes. IP65 waterproof boxes are in the distribution box range for outdoor mounting.
Scope This With Us
A DC side protected with devices rated for DC duty, sourced alongside the AC distribution devices for the same project.