
WYLEX PSBL340-B TRIPLE POLE B Curve/Type B MCB 40A 10KA
PSBL340-B
Wylex Triple Pole Type B Miniature Circuit Breaker – Reliable 40A Protection for Three-Phase Circuits
The Wylex Triple Pole Type B MCB offers dependable circuit protection with a 40A rating and 10kA breaking capacity. Designed for three-phase applications, this breaker provides effective protection against overloads and short circuits, ensuring the safety and efficiency of electrical installations. Compatible with new 5SL distribution boards for seamless integration.
- Type B Tripping Curve – Ideal for protecting circuits with low inrush currents, such as lighting and socket outlets.
- 40A Rated Current – Provides reliable protection for low-power three-phase circuits.
- 10kA Short-Circuit Capacity – Delivers robust protection against electrical faults for increased system reliability.
- Triple Pole Configuration – Simultaneously protects all three phases, ensuring balanced circuit protection.
- Compact & Durable Design – Manufactured to high standards for long-lasting, professional-grade performance.
Technical Specification
- Rated Current: 40A
- Tripping Curve: Type B
- Breaking Capacity: 10kA
- Configuration: Triple Pole
- Compatibility: Fits new 5SL-compatible Wylex distribution boards
- Standards Compliance: IEC/EN 60898
✅ Ensure safe and reliable three-phase protection with the Wylex Triple Pole Type B MCB!

Range | Wylex |
Trip Type | B Curve |
Short Circuit Rating | 10kA |
Product | MCB |
Type | Triple Pole |
Voltage | 230|400 V |
Pole Configuration | Triple Pole (3P) |
Current Rating | 40A |
Number Of Poles | Triple Pole (3P) |
Delivery Costs
Our standard delivery charge to UK mainland addresses is £5.90 ex-VAT.
Take advantage of FREE* Delivery when you spend over £100 (per order) ex-VAT.
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12.00 ex-VAT.
Solar Panels, Batteries and Inverters
Due to their size all solar panels, batteries and inverters orders up to 50 qty will be despatched on a pallet and incur a £120** ex-VAT delivery charge.
**£180 ex VAT to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes.
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