Home › Manufacturers › Siemens › 5SY42C2

Siemens

Siemens 5SY42C2 2-Pole Miniature Circuit Breaker — 20A

Siemens 5SY42C2 2-pole miniature circuit breaker.

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number5SY42C2

Type Miniature Circuit Breaker

Manufacturer Siemens

Part Number 5SY42C2

Poles 2

Get a price for 5SY42C2

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 protection 400V rated 10kA breaking capacity C-curve tripping 20A current rating 70mm depth

Product description

The Siemens 5SY42C2 is a 2-pole miniature circuit breaker designed for robust electrical protection in a variety of settings. It operates at 400V with a substantial 10kA breaking capacity, featuring a C-curve for handling moderate inrush currents. This specific model is rated for 20A and has a standard installation depth of 70mm.

This circuit breaker is widely used in industrial and commercial applications, including motor control circuits, lighting systems, and power distribution where moderate inductive loads are present. It effectively protects against overloads and short circuits, ensuring the integrity and safety of electrical installations.

Stanlo Automation, your trusted veteran-owned source for surplus industrial parts, offers the Siemens 5SY42C2. We are dedicated to providing quality components and exceptional service to meet your automation needs with efficiency and reliability.

Technical specifications

Type	Miniature Circuit Breaker
Manufacturer	Siemens
Part Number	5SY42C2
Poles	2
Rated Voltage	400V
Breaking Capacity	10kA
Current Rating	20A
Trip Curve	C
Depth	70 mm

Common applications

Industrial power distribution

Motor starting circuits

Commercial lighting

Control panel protection

Machine tools

Automation systems

Compatible systems

Designed for use within Siemens standard electrical distribution systems.

Also known as

Siemens 5SY42C2 MCB Siemens 20A 2-pole breaker 5SY42C20

Replaces / compatible with

Part of the Siemens 5SY4 series, this breaker is suitable for replacing other 5SY4 2-pole breakers with similar electrical ratings. It is compatible with Siemens panel accessories.

Technical note

Expert tip

Ensure proper selection of the trip curve (B, C, or D) based on the expected inrush current of the connected load to guarantee optimal protection with the 5SY42C2.

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 5SY42C2 C-curve breaker best suited for?

The Siemens 5SY42C2, with its C-curve tripping characteristic, is best suited for circuits with moderate inrush currents, such as fluorescent lighting, discharge lighting, and small to medium-sized motor loads. It provides reliable protection against overloads and short circuits.