Home › Manufacturers › Siemens › 5SX2-203-8

Siemens

Siemens 5SX2-203-8 Circuit Breaker - 2-Pole, 3A

Siemens 5SX2-203-8 2-Pole Circuit Breaker

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number5SX2-203-8

Poles 2

Current Rating 3A

Voltage 400V

Breaking Capacity 6kA

Get a price for 5SX2-203-8

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

2-pole configuration Type D tripping characteristic 6kA interrupting capacity 400V operational voltage High inrush current capability Protection for inductive loads

Product description

The Siemens 5SX2-203-8 is a 2-pole miniature circuit breaker featuring a Type D tripping characteristic and a 6kA breaking capacity for 400V systems. Rated at 3A, this breaker is designed to protect circuits with high inrush currents.

This breaker is particularly suited for applications involving inductive loads like small three-phase motors or transformers where significant startup currents are expected. The 6kA rating provides robust protection against short-circuit faults.

Stanlo Automation, a veteran-owned distributor specializing in surplus industrial automation parts, offers the Siemens 5SX2-203-8. We are committed to providing quality components and exceptional service to meet your industrial automation needs. Source your parts from Stanlo Automation for reliability.

Technical specifications

Poles	2
Current Rating	3A
Voltage	400V
Breaking Capacity	6kA
Tripping Curve	D
Series	5SX2

Common applications

Small motor protection

Transformer circuits

Industrial control panels

Automation systems

Power distribution

Auxiliary circuits

Compatible systems

2-pole AC circuits Standard DIN rail mounting Industrial control and power distribution

Also known as

Siemens 5SX2 3A 2-pole breaker 400V 6kA D-curve Siemens 5SX2-203-8 industrial breaker

Replaces / compatible with

The Siemens 5SX2-203-8 is a modern 2-pole miniature circuit breaker that can replace older units with similar specifications. It adheres to current international safety standards.

Technical note

Expert tip

For three-phase applications requiring 2-pole protection with Type D characteristics, ensure the Siemens 5SX2-203-8 is correctly wired to isolate both live conductors.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What type of loads is the Siemens 5SX2-203-8 (3A, Type D) best suited for?

The Siemens 5SX2-203-8, with its 3A rating and Type D tripping curve, is ideal for protecting circuits containing inductive loads that experience high inrush currents during startup. This includes small motors, transformers, and solenoids, where the breaker can tolerate these surges without tripping prematurely.