CTI
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CTI
Keep your specialized distribution boards, commercial installations, and domestic consumer units running safely with our immediately available stock of genuine CTI circuit protection components. As dedicated UK electrical supply experts, we specialize in sourcing both current and rare or obsolete modules, allowing you to find the exact replacements you need without facing costly panel retrofits.
Our online CTI catalog is updated regularly and designed to accommodate a diverse range of configurations, including:
- CTI MCBs: High-quality miniature circuit breakers available across the standard ZB and ZC series, tracking single-pole layouts across specific modification suffixes (including S1, S2, S3, and S4 lines) from 6A up to 63A.
- CTI RCBOs & RCDs: Comprehensive single-module RCBOs from the ZCBO range alongside robust double-pole RCD modules (including the ZR and ZR SQ lines) up to 80 Amp engineered for focused earth-leakage defense.
- CTI Main Switches: Robust 100 Amp double-pole main switch disconnectors from the ZMA series designed to ensure complete, secure incoming system isolation.
- Advanced Circuit Safety: Reliable fault tracking, standard residential breaking capacity parameters (6kA ratings), and popular domestic tripping profiles (Curves B and C) paired with Type AC protection profiles engineered for robust electrical safety.
Why Choose Circuit Breaker Specialists?
- Free UK Delivery: Enjoy cost-free shipping automatically applied on every single order.
- Same Working Day Dispatch: Complete your online checkout before 3PM, and we dispatch your package today.
- Next Working Day Shipping: Urgent delivery options available at checkout to minimize system downtime during critical faults.