RT18 125 circuit breaker base — available in 1P, 3P and 4P (single-pole, three-pole, four-pole) configurations. Includes RT18L 125 1P Base circuit breaker holder for secure mounting. Key benefits Secure mounting: RT18L 125 holder keeps the corresponding RT18 125 breaker firmly in place, resisting vibration and accidental dislodgement. Easy installation and replacement: standardized footprint and consistent mounting speed up installs and make breaker swaps fast and predictable. Flexible compatibility: offered in 1P, 3P and 4P formats to suit single-phase, three-phase or multi-pole systems. Compact, panel-friendly design: small footprint fits standard panels and enclosures without sacrificing accessibility. Reliable performance: durable construction designed for long-term use in panels, distribution boards and control enclosures. Reduced wiring errors: consistent mounting orientation and layout simplify wiring and lower the chance of mistakes during installation or maintenance. Key attributes Function: provides a secure base and holder for RT18 125 circuit breakers in multiple pole arrangements. Compatibility: compatible with RT18 125 breakers and the RT18 125 ecosystem; available as 1P, 3P and 4P options. Size and footprint: compact, standardized footprint for installation in panels and enclosures. Construction and performance: built for durability and vibration resistance to maintain reliable electrical connection and mechanical retention. Practical applications Residential and small commercial panels: install 1P RT18 125 breakers on the included RT18L 125 1P base for branch circuit protection. Industrial control panels: use 3P bases for motor protection and three-phase loads where secure, vibration-resistant mounting is required. Distribution boards and multi-pole protection: use 4P bases for multi-pole arrangements and consolidated distribution applications. Why choose this base Part of the trusted RT18 125 ecosystem for consistent parts and fit. Consistent mounting and standardized footprint for faster installs and replacements. Secure holder design reduces the risk of dislodgement and service interruptions. Flexible pole options cover single-phase, three-phase and multi-pole needs without changing breaker families.