NOARK · UL 489 miniature circuit breaker
Product overview
The NOARK B1H miniature circuit breaker provides branch-circuit protection. This page covers 2P configurations. Select the current rating, trip curve and terminal version using the exact manufacturer code.
Technical selection summary
| Series | B1H |
|---|---|
| Page pole scope | 2P |
| Rated current | 0.5–32 A |
| AC voltage | 277 V AC for 1P; 480Y/277 V AC for 2P and 3P |
| DC application | B1H is the AC series; do not apply B1N/B1D DC ratings |
| Interrupting rating | 10 kA at the applicable listed system voltage |
| Instantaneous trip bands | B: 3–5 × In; C: 5–10 × In; D: 10–20 × In |
| Mounting | 35 mm DIN rail |
| Terminal selection | Standard box lugs; R suffix identifies the separate ring-tongue terminal version |
The 480Y/277 V AC designation applies to the stated wye-system rating. It is not a general 480 V delta rating. Do not use the 63 A B1N family range for B1H. The reference matrix may show other pole counts in the same family. Confirm the complete model, terminal version and applicable approval documents before ordering.
Manufacturer model reference
The matrix below retains the catalogue model references. Rows shown do not change the selectable scope at the top of this page.
| Rated current (A) | C (5–10 × In), 1P | C (5–10 × In), 2P | C (5–10 × In), 3P | B (3–5 × In), 1P | B (3–5 × In), 2P | B (3–5 × In), 3P | D (10–20 × In), 1P | D (10–20 × In), 2P | D (10–20 × In), 3P |
|---|---|---|---|---|---|---|---|---|---|
| 0.5 | B1H1C0.5 | B1H2C0.5 | B1H3C0.5 | B1H1B0.5 | B1H2B0.5 | B1H3B0.5 | B1H1D0.5 | B1H2D0.5 | B1H3D0.5 |
| 1 | B1H1C1 | B1H2C1 | B1H3C1 | B1H1B1 | B1H2B1 | B1H3B1 | B1H1D1 | B1H2D1 | B1H3D1 |
| 1.6 | B1H1C1.6 | B1H2C1.6 | B1H3C1.6 | B1H1B1.6 | B1H2B1.6 | B1H3B1.6 | B1H1D1.6 | B1H2D1.6 | B1H3D1.6 |
| 2 | B1H1C2 | B1H2C2 | B1H3C2 | B1H1B2 | B1H2B2 | B1H3B2 | B1H1D2 | B1H2D2 | B1H3D2 |
| 3 | B1H1C3 | B1H2C3 | B1H3C3 | B1H1B3 | B1H2B3 | B1H3B3 | B1H1D3 | B1H2D3 | B1H3D3 |
| 4 | B1H1C4 | B1H2C4 | B1H3C4 | B1H1B4 | B1H2B4 | B1H3B4 | B1H1D4 | B1H2D4 | B1H3D4 |
| 5 | B1H1C5 | B1H2C5 | B1H3C5 | B1H1B5 | B1H2B5 | B1H3B5 | B1H1D5 | B1H2D5 | B1H3D5 |
| 6 | B1H1C6 | B1H2C6 | B1H3C6 | B1H1B6 | B1H2B6 | B1H3B6 | B1H1D6 | B1H2D6 | B1H3D6 |
| 7 | B1H1C7 | B1H2C7 | B1H3C7 | B1H1B7 | B1H2B7 | B1H3B7 | B1H1D7 | B1H2D7 | B1H3D7 |
| 8 | B1H1C8 | B1H2C8 | B1H3C8 | B1H1B8 | B1H2B8 | B1H3B8 | B1H1D8 | B1H2D8 | B1H3D8 |
| 10 | B1H1C10 | B1H2C10 | B1H3C10 | B1H1B10 | B1H2B10 | B1H3B10 | B1H1D10 | B1H2D10 | B1H3D10 |
| 13 | B1H1C13 | B1H2C13 | B1H3C13 | B1H1B13 | B1H2B13 | B1H3B13 | B1H1D13 | B1H2D13 | B1H3D13 |
| 15 | B1H1C15 | B1H2C15 | B1H3C15 | B1H1B15 | B1H2B15 | B1H3B15 | B1H1D15 | B1H2D15 | B1H3D15 |
| 16 | B1H1C16 | B1H2C16 | B1H3C16 | B1H1B16 | B1H2B16 | B1H3B16 | B1H1D16 | B1H2D16 | B1H3D16 |
| 20 | B1H1C20 | B1H2C20 | B1H3C20 | B1H1B20 | B1H2B20 | B1H3B20 | B1H1D20 | B1H2D20 | B1H3D20 |
| 25 | B1H1C25 | B1H2C25 | B1H3C25 | B1H1B25 | B1H2B25 | B1H3B25 | B1H1D25 | B1H2D25 | B1H3D25 |
| 30 | B1H1C30 | B1H2C30 | B1H3C30 | B1H1B30 | B1H2B30 | B1H3B30 | B1H1D30 | B1H2D30 | B1H3D30 |
| 32 | B1H1C32 | B1H2C32 | B1H3C32 | B1H1B32 | B1H2B32 | B1H3B32 | B1H1D32 | B1H2D32 | B1H3D32 |
Typical applications
- Branch-circuit protection in industrial control panels
- Replacement procurement with exact pole, curve and voltage matching
Specify your enquiry
For a focused quotation, include:
- Complete B1H model code, rated current and quantity
- Pole count and B, C or D curve
- AC or DC supply, system voltage and grounding arrangement
- Box-lug or ring-tongue terminal version and accessory requirements
- Required approval documents for the destination market
Download NOARK miniature circuit breaker catalogue (PDF)
Product reference images and drawings
Family reference pages can show other B1 series versions. Use the exact series and pole-specific voltage in the selection summary above.
