Description
CUTLER-HAMMER C825KN10 | 200A Contactor Spec Sheet
Product Introduction
When a massive primary contactor welds shut during an aggressive motor start, replacing the power block before secondary thermal damage hits the enclosure requires an exact-match drop-in unit. The Cutler-Hammer C825KN10 is not a light-duty commercial relay; it is a rugged 200-amp power contactor engineered to handle severe repetitive duty cycles under harsh industrial conditions.
Mounted securely to the subpanel backplate, the unit utilizes robust silver-alloy contact tips to break heavy inductive loads safely—keeping contact bounce and arc erosion to a minimum. It demands proper torque on the main power terminations and a stable control voltage supply, but once bolted into the cabinet, it delivers the sheer switching endurance required for heavy manufacturing equipment.
C825KN10
Key Technical Specifications
| Parameter | Specification |
| Current Rating | 200 A continuous |
| Voltage Rating | 600 VAC max |
| Number of Poles | 3-Pole (3-Phase power switching) |
| Coil Voltage | 110/120 VAC (50/60 Hz) |
| Series Designator | Series A2 |
| Operating Temperature | 0^\circC to 55^\circC industrial standard |
| Mounting Style | Subpanel chassis mount |
| Weight | Approximately 11.3 kg (25 lbs) |
Application Scenarios & Pain Points
- Large Motor Starting Circuits: High inrush currents used to pit and weld smaller contacts on older machinery until maintenance swapped in the high-capacity C825KN10 to handle the heavy inductive load reliably.
- Industrial Heating Banks: Without robust arc-suppression and heavy-duty copper shunts, resistive heating loads would rapidly degrade standard controls. This contactor manages multi-kilowatt thermal loads without thermal drift.
- Heavy Conveyor Systems: A distribution facility avoided an extensive control panel retrofit by replacing a failed legacy switching block with the exact-footprint C825KN10, restoring operations swiftly.
QA & Live Testing SOP (Trust Signal)
High-amperage switching hardware demands strict verification before handling live power. Every incoming Cutler-Hammer C825KN10 goes through a rigorous multi-point test protocol:
- Visual & Contact Inspection: We examine silver-alloy contact tips for wear or pitting, surface-ground armatures if required, and inspect the arc chutes for carbon tracking or thermal stress.
- Coil & Insulation Testing: Each operating coil is tested for proper resistance, while insulation integrity is checked via a high-potential dielectric test across open contacts.
- Mechanical Operation & Packaging: Units undergo a physical actuation check to ensure smooth mechanical binding-free movement, followed by secure crating to protect terminal studs during transit.
Field Engineer’s Pitfall Guide
- ❗ Loose Power Terminal Lugs: Failing to torque main cable lugs to manufacturer specifications will cause high resistance connections, leading to severe localized heating and terminal melting under full 200A load.
- ❗ Coil Voltage Discrepancies: Always verify your control transformer output matches the 120V coil rating; energizing a lower-voltage coil incorrectly or feeding it unregulated power will burn out the magnet winding instantly.
- ❗ Arc Chute Omissions: Never operate the C825KN10 without its protective arc chutes properly snapped into place; doing so risks catastrophic phase-to-phase flashovers during high-current interruptions.
Intent-Driven FAQ
Can I replace an older Citation Line contactor directly with the ?
Yes, the is engineered as a direct replacement for matching Series A2 physical footprints, provided your mounting layout and bus bar orientations align.
Is this specific unit brand new or surplus?
This inventory consists of verified surplus—factory backup stock or professionally reconditioned units preserved in climate-controlled storage environments.
Are replacement contact tips and coils readily available for this model?
Yes, because of the modular design of the Cutler-Hammer Citation series, individual contact kits and replacement coils can typically be sourced for maintenance.
What kind of warranty comes with this purchase?
Every unit includes a standard 1-year functional replacement warranty covering mechanical and electrical performance under normal operating conditions.
Do I need special tools to inspect the internal contacts?
Standard hand tools (such as a screwdriver or nut driver) are all that is required to remove the arc hood covers and visually check contact tip wear.
