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Keyence · circuit breaker
LK-H057 is a Keyence circuit breaker with Rated operational voltage <= 440 V AC; Breaking capacity Icu/Ics 0.01% of F.S./°C (F.S.= 20 mm 0.79" ); Supply voltage 10...30 V DC (IEC 60947-5-2). 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 operational voltage | <= 440 V AC |
|---|---|
| Breaking capacity Icu/Ics | 0.01% of F.S./°C (F.S.= 20 mm 0.79" ) |
| Supply voltage | 10...30 V DC (IEC 60947-5-2) |
| Mechanical | |
| Weight | Approx. 260 g |
| Mounting | Diffuse reflective |
| Enclosure rating | IP20 (IEC 60529) |
| Environment and compliance | |
| Operating temperature | -25...+60 °C |
| Certifications | CE, cULus |
| Humidity | 35 to 85 % RH (No condensation) |
Values follow the Keyence circuit breaker specification for this catalog number; parameters not confirmed for this variant are omitted rather than estimated.
| Keyence circuit breaker variants | |||
| Catalog number | Breaking capacity Icu/Ics | Rated operational voltage | |
|---|---|---|---|
| LK-H057 (this page) | 0.01% of F.S./°C (F.S.= 20 mm 0.79" ) | <= 440 V AC | |
| LK-H057K | 0.01% of F.S. (F.S.= 20 mm 0.79" ) | <= 440 V AC | |
| LK-H050 | 0.01% of F.S./°C (F.S.= 20 mm 0.79" ) | <= 440 V AC | |
| LK-H052 | 0.01% of F.S./°C (F.S.= 20 mm 0.79" ) | <= 440 V AC | |
Before selecting an alternative, confirm its dimensions, terminals and installation requirements in the manufacturer documentation.
Keyence LK-H057 — Sensor or detector for object detection, distance measurement and status feedback on production lines. The figures below are taken from the specification table on this page for catalog number LK-H057; verify the catalog number against your bill of materials before requesting a quotation.
Cross-check the ratings above with the installed device before confirming the order.
Q.Where can I find the certifications data for LK-H057?
It is listed in the specification table for Keyence LK-H057 as CE, cULus. Compare it with the nameplate of the installed unit before ordering.
Q.For LK-H057, what does the specification table state about humidity?
The specification table lists humidity = 35 to 85 % RH (No condensation) for Keyence LK-H057. Confirm this figure against the unit currently in the panel.
Q.Which value is published under operating temperature for catalog number LK-H057?
For LK-H057, operating temperature is given as -25...+60 °C. Use the value as the reference when sourcing a current-production equivalent.
Q.What should I include in an enquiry for LK-H057?
Send the full catalog number LK-H057, the required quantity and a photo of the nameplate. Stock, lead time and the applicable compliance documents can then be confirmed for Keyence LK-H057.
Q.How do I confirm compatibility of LK-H057 before ordering?
Match the catalog number LK-H057 and the specification values listed above against the installed unit, then confirm the firmware or hardware revision where a revision-sensitive part is involved.
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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