EATON PL9-C10/2-DC – Two‑Pole DC Miniature Circuit Breaker for 10 A Protection

The EATON PL9-C10/2-DC is a compact, DIN‑rail mounted DC miniature circuit breaker designed for dependable protection of low-voltage direct current circuits. From my experience, it’s a solid pick for PV combiner boxes, battery racks, and DC control panels where you want a simple, serviceable device with predictable trip behavior. The C‑curve characteristic suits mixed DC loads that can draw moderate inrush, and the two-pole layout is typically used to switch and protect both polarities in a DC string.

Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in‑stock items; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• DC-rated, 2-pole protection – Designed for direct-current circuits; two poles give you isolation on both conductors in many DC layouts.
• 10 A, C-curve tripping – Handles typical DC loads with moderate inrush while still reacting quickly to faults.
• DIN rail (35 mm) installation – Clicks into standard industrial enclosures; easy swap during panel upgrades.
• Compact 2-modules wide – Saves space in combiner boxes and telecom power distribution panels.
• Robust terminals – Screw clamp terminals for solid and flexible conductors; finger-safe front when installed.
• Accessory-ready – In many cases, accepts auxiliary contacts, shunt trip, or lockable toggles for maintenance safety (availability varies by region).
• Clear on/off indication – You might notice the toggle position is easy to read at a glance during service calls.
• Standards compliance – Typically aligned with IEC/EN DC protection standards (e.g., 60947‑2) and CE marking for EU markets.

Technical Specifications

Brand / Model	EATON PL9-C10/2-DC
Product Type	DC Miniature Circuit Breaker (MCB), 2-pole, C-curve, 10 A
HS Code	8536.20 (Circuit breakers for a voltage not exceeding 1,000 V)
Power Requirements	Not applicable (passive protective device)
Poles / Rated Current	2 poles / 10 A (C characteristic)
Dimensions & Weight	Width: 2 TE (approx. 36 mm). Standard miniature breaker form factor for DIN enclosures.
Operating Temperature	Typically −25 °C to +55 °C (check datasheet for derating curves)
Signal I/O	Line/Load screw terminals; optional auxiliary contact or trip-indication modules on request
Communication Interfaces	None (mechanical device)
Installation Method	35 mm DIN rail (EN 60715); front wiring; panel integration per IEC 61439 practices

Application Fields

Typical use cases include:

• PV combiner boxes and small solar arrays (string protection and isolation)
• Battery energy storage systems (rack-level DC branch protection)
• Telecom DC power distribution (−48 V and similar bus protection)
• Industrial DC control panels, contactor coils, and small DC drives
• Auxiliary DC circuits in EV charging cabinets and UPS subsystems

One thing I appreciate is how it fits into tight panels without fuss. A panel builder told us they swapped these into a telecom retrofit and liked the consistent torque feel on the terminals and the clean toggle feedback during commissioning.

Advantages & Value

• Reliability – EATON’s DC xPole design is well-proven; trips are predictable and repeatable in most cases.
• Compatibility – Works with standard 35 mm DIN rails and common enclosure cutouts; easy to integrate with standard busbar systems.
• Cost control – Simple spare strategy: one family across multiple DC circuits reduces stocking complexity.
• Support – We can help match the curve and pole configuration to your DC voltage and fault level for correct coordination.

Installation & Maintenance

• Environment – Install in a properly ventilated enclosure; keep within rated ambient. Allow clearance for toggling and wiring.
• Wiring – Use correctly sized conductors and ferrules where applicable; tighten to the manufacturer’s torque values; follow line/load orientation if marked.
• DC polarity – For DC strings, observe polarity markings and, if higher DC voltage is required, use series pole connection as specified by the datasheet.
• Derating – At higher ambient temperatures or when gang-mounted, apply thermal derating; avoid paralleling poles for current sharing unless explicitly allowed.
• Routine checks – Periodically re-torque terminals, look for discoloration or insulation damage, and test mechanical operation. No firmware updates are involved.
• Safety – Lock-out/tag-out during maintenance; consider a lockable toggle accessory for service procedures.

Quality & Certifications

• CE marking; RoHS compliant
• Built to relevant IEC/EN standards for DC circuit protection (typically IEC/EN 60947‑2)
• UL/CSA availability may vary by regional variant; confirm if required for your market
• Manufacturer warranty support; our supply warranty: 365 days

Suggested Accessories & Complementary Items

• Auxiliary contact modules (trip/alarm indication) for remote status
• Shunt trip or undervoltage release for interlocking and safety loops
• Lockable toggle device for maintenance lockout
• DIN rail busbars and end caps for tidy panel assembly
• Surge protective devices (DC type) for PV and battery applications