Meba power circuit breaker OLB7 1P

Meba power circuit breaker OLB7 1P   its case and items are adopted by high fire-resistant and shockproof plastics. The product, with long life, is mainly used in AC 50Hz/60Hz single-pole 230V or two, three, four pole 400V circuit for overload and short-circuit protection as well as for unfrequent on-and-off switching electric equipment and lighting circuit in normal case. The products comply with IEC 60898.

1.1 Function

protection of circuits against short-circuit currents,
protection of circuits against overload currents,
circuit-breakers are used in domestic installation,
as well as in commercial and industry electrical
distribution systems.

1.2 Feature
high protective grade(up to IP20), high breaking capacity,
reliable sensitive action, convenient, long life etc.

1.3 Selection
Technical data of the network at the point considered:
the earthing systems (TNS, TNC),
short-circuit current at the circuit-breaker installation point,
which must always be less than the breaking capacity of this device,
Network normal voltage.

Tripping curves:
B curve (3-5In)  protection for people and big length cables in TN and IT systems.
C curve (5-10In)  protection for resistive and inductive loads with low inrush current.
D curve(10-14In)  protection for circuits which supply loads with high inrush current
at the circuit closing (LV/LV transformers, breakdown lamps).

1.4 Approvals and certificates
Detailed information, please refer to Certificates Table

Meba power circuit breaker OLB7 1P

Technical Data
Pole: 1, 2, 3, 4
Rated Voltage(Un): 230(240)/400(415)V AC, max.60V DC
Rated Current IN: 0.5-63A
Rated frequency fN: 50HZ
Rated breaking capacity: 6KA
Energy limiting class: 3
Tripping characteristic: B,C,D
Cross-section of connecting lead: 1-25mm2
Isolating class: B
Mounting on the rail: EN 50022
Build-in width: 18mm/pole
Standards: IEC 60898,EN60898


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