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Schneider Electric · ComPacT circuit breaker
LV426303 is a Schneider Electric circuit breaker with Rated current Ie 40 A; Rated operational voltage up to 690 V AC; Breaking capacity Icu/Ics 100% Icu. It is used in distribution boards, motor protection circuits, panel feeders where the installed unit is matched to the original catalog number and a compact, documented part is required.
| Electrical | |
| Rated current Ie | 40 A |
|---|---|
| Rated operational voltage | up to 690 V AC |
| Rated insulation voltage Ui | 750 V AC conforming to IEC 60947-2 |
| Rated impulse withstand Uimp | 8 kV conforming to IEC 60947-2 |
| Breaking capacity Icu/Ics | 100% Icu |
| Mechanical | |
| Weight | 1.06 kg |
| Mounting | By screws (plate) |
| Enclosure rating | IP40 conforming to IEC 60529 |
| Environment and compliance | |
| Operating temperature | -25...+70 °C |
| Certifications | CCC, CE, EAC, marine approvals |
| Degree of protection | IP40 |
Values follow the Schneider Electric ComPacT circuit breaker specification for this catalog number; parameters not confirmed for this variant are omitted rather than estimated.
| Schneider Electric ComPacT circuit breaker variants | |||
| Catalog number | Breaking capacity Icu/Ics | Rated operational voltage | |
|---|---|---|---|
| LV426303 (this page) | 100% Icu | up to 690 V AC | |
| LV426305 | 100% Icu | up to 690 V AC | |
| LV426306 | 100% Icu | up to 690 V AC | |
| LV426308 | 100% Icu | up to 690 V AC | |
Before selecting an alternative, confirm its dimensions, terminals and installation requirements in the manufacturer documentation.
The LV426303 is the device-level element in a Schneider Electric circuit breaker installation. It receives the field signals and control supply listed above — up to 690 V AC — and switches or conditions the load within the 40 A ratings shown in the Specifications table. Wiring and protective devices are sized to those same numbers, not to a generic assumption.
Typical installations place it in distribution boards, motor protection circuits, panel feeders, where the unit is matched to the original catalog number and the enclosure provides By screws (plate) support. Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Schneider Electric LV426303 — Circuit breaker providing branch-circuit overload and short-circuit protection in distribution boards and panel feeders. The figures below are taken from the specification table on this page for catalog number LV426303; record the nameplate data of the unit being replaced before selecting an equivalent.
Available from stock with datasheet, certificates and a quotation on request.
Q.Where can I find the certifications data for LV426303?
It is listed in the specification table for Schneider Electric LV426303 as CCC, CE, EAC, marine approvals. Confirm this figure against the unit currently in the panel.
Q.For LV426303, what does the specification table state about breaking capacity Icu/Ics?
The specification table lists breaking capacity Icu/Ics = 100% Icu for Schneider Electric LV426303. Use the value as the reference when sourcing a current-production equivalent.
Q.Which value is published under degree of protection for catalog number LV426303?
For LV426303, degree of protection is given as IP40. Check the revision of the installed unit if the catalog number has been superseded.
Q.Can the LV426303 replace the unit currently installed in my panel?
Compare catalog number LV426303 and the ratings above with the nameplate of the installed device. A current-production equivalent is selected by function and electrical rating, not by the label alone.
Q.What should I include in an enquiry for LV426303?
Send the full catalog number LV426303, the required quantity and a photo of the nameplate. Stock, lead time and the applicable compliance documents can then be confirmed for Schneider Electric LV426303.
Standard (US & Canada, tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders under $500.00; free on orders of $500.00 and above.
Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.
Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Shipping charges and available services are displayed at checkout. See the Shipping Policy for details.
Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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