253120 The OptiFuse 253120 is a 120A, 48VDC heavy duty, high amp, waterproof circuit breaker. It features a manual reset and surface mount design.
Mfr Part #:

253120

Mfr Name: OptiFuse
OptiFuse
The OptiFuse 253120 is a 120A, 48VDC heavy duty, high amp, waterproof circuit breaker. It features a manual reset and surface mount design.
Stock on Request

253120 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Actuator Type
Approval Agency
Automotive Grade
Body Material
Current Rating
Current Rating (Amps)
Illumination
Industrial Grade
Ingress Protection
Medical Grade
Military Grade
Mounting Type
Number of Poles
Operating Temperature
Voltage Rating

253120 Description

Short technical summary and product information.

This OptiFuse 253120 is a Type III manual reset circuit breaker designed for heavy-duty applications requiring high amperage protection. It operates at a voltage rating of 48VDC and a current rating of 120A.

 

The breaker is built for harsh environments, featuring a waterproof design with an IP67 ingress protection rating. It is also ignition protected according to SAE J1171 standards, making it suitable for marine and automotive applications.

 

Mounting is simplified with a surface mount design and 1/4”-28 stud terminals. The body is constructed from thermoset plastic (UL94V-0) with nickel-plated terminals. The operating temperature range is -32°C to 82°C.

 

Compliance includes SAE J553, ABYC-E11, and UL1077 testing. The interrupting rating is 3000A at 30VDC.

253120 Quick Information

Product Type: Circuit Breaker
Series: Type III
Canonical Name: OptiFuse 253120 Heavy Duty High Amp Waterproof Circuit Breaker
Subcategory: High Amp Circuit Breaker

253120 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

253120 Features

  • 120A, 48VDC heavy duty circuit breaker.
  • Waterproof, IP67 rated design.
  • Manual reset, push-to-reset actuator.
  • Surface mount with 1/4”-28 stud terminals.
  • Ignition protected per SAE J1171.

253120 Applications

  • Ideal for marine power systems.
  • Suitable for automotive circuits.
  • Used in heavy-duty equipment.
  • Protects high-current DC loads.
  • Ensures safety in harsh environments.

253120 FAQs

6 frequently asked questions generated from this part’s specifications.
What is the current rating of the OptiFuse 253120 circuit breaker?

The current rating is 120A.

What is the maximum voltage rating for the OptiFuse 253120?

The voltage rating is 48VDC.

What type of reset does the OptiFuse 253120 circuit breaker have?

It has a manual reset, specifically a push-to-reset actuator.

What is the operating temperature range for this circuit breaker?

The operating temperature range is -32°C to 82°C.

Is the OptiFuse 253120 waterproof and ignition protected?

Yes, it has an IP67 ingress protection rating and is ignition protected according to SAE J1171.

What is the interrupting rating of the 253120 circuit breaker?

The interrupting rating is 3000A at 30VDC.

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