Siemens 5SJ4116-7HG40 - 16A, 1-Pole, Miniature Circuit Breaker (MCB)

Siemens 5SJ4116-7HG40 is a compact 16A, 1-Pole Miniature Circuit Breaker (MCB) designed to deliver reliable overcurrent protection in electrical distribution systems. Built for flexible use, it fits neatly into panelboards, switchboards, and control panels, offering targeted protection where it matters most.

This 1-Pole MCB provides immediate, predictable interruption for overloads and short circuits, helping safeguard wiring, components, and downstream equipment while minimizing downtime. Its streamlined design makes it a practical choice for tight spaces and modular panel configurations.

Key features

• Current rating: 16A
• Poles: 1-Pole
• Breaker type: Miniature Circuit Breaker (MCB)
• Versatile for industrial, commercial, and OEM applications requiring dependable overcurrent protection

Why this Siemens MCB stands out

The 5SJ4116-7HG40’s single-pole design offers precise protection for individual circuits within panelboards, switchboards, and control panels, simplifying wiring layouts and enabling scalable installations. Built by Siemens, it combines consistent performance with durable construction, making it suitable for demanding environments from manufacturing floors to critical distribution points in commercial spaces.

Ideal use scenarios

• Single-phase protection for lighting, receptacle, and small process circuits in commercial buildings
• Feeder protection within distribution panels and motor control centers (MCCs)
• OEM equipment enclosures where space is at a premium and reliable trip protection is essential

Practical benefits and outcomes

By ensuring fast, reliable disconnection during overloads, the 5SJ4116-7HG40 helps prevent insulation damage, reduces the risk of fire hazards, and supports safer, more efficient electrical operation. Its compatibility with standard Siemens panel components enables straightforward installation and future expansion without rework.

Specifications at a glance

Current rating: 16A • Poles: 1 • Breaker type: MCB • Application: panelboards, switchboards, control panels • Suitable for industrial, commercial, and OEM environments.