Eaton Bussmann

Bussmann FNQ-R-3-1/2 Class CC Time-Delay Fuse 3.5A 600VAC

SKU: LL1-BSM-FNQ-R-3-1/2*1

$6.13

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Bussmann FNQ-R-3-1/2 Class CC Time-Delay Fuse 3.5A 600VAC

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Eaton Bussmann

Bussmann FNQ-R-3-1/2 Class CC Time-Delay Fuse 3.5A 600VAC

SKU: LL1-BSM-FNQ-R-3-1/2*1

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$6.13

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PRODUCT DOCUMENTATION

Product Information

Technical specifications, features, applications and purchasing information.

Technical Specifications

Brand	Bussmann (Eaton)
Model Number	FNQ-R-3-1/2
Product Category	Class CC Time-Delay Fuse
Product Series	LIMITRON FNQ-R
Current Rating	3.5 A (3500 mA)
AC Voltage Rating	600 VAC
Fuse Class	Class CC
Operating Characteristic	Time-Delay (Slow-Blow)
Fuse Type	Current-Limiting High-Inrush Time-Delay Fuse
Fuse Element	Dual-Element
Interrupting Rating at 600 VAC	200 kA RMS Symmetrical (200,000 A)
Response Time	12 Seconds at 200% of Rated Current (Eaton Product Specification)
Fuse Format	Class CC Cartridge Fuse
Nominal Dimensions	10.3 x 38.1 mm (0.41 x 1.50 in)

Key Features

3.5 A Current Rating

Rated at 3.5 amperes, the Bussmann FNQ-R-3-1/2 provides Class CC overcurrent protection for appropriately specified industrial control circuits, small control transformers and compatible electrical equipment.

600 VAC Voltage Rating

Designed for compatible AC electrical circuits operating at or below 600 VAC, supporting industrial control and branch-circuit applications where Class CC fuse protection is specified.

High-Inrush Time-Delay Performance

The time-delay characteristic accommodates temporary magnetizing inrush currents associated with compatible small control transformers. Eaton specifies a response time of 12 seconds at 200% of rated current. Fuse selection should follow the manufacturer's published time-current characteristics.

200 kA Interrupting Capacity

Provides a manufacturer-specified interrupting rating of 200,000 amperes RMS symmetrical at 600 VAC for properly engineered electrical circuits with evaluated available short-circuit current.

Current-Limiting Class CC Design

Combines current-limiting operation with Class CC branch-circuit protection. The rejection-style construction is intended for compatible Class CC fuse holders and helps prevent insertion of unsuitable supplemental fuse types into rejection-style holders.

Compact Melamine Cartridge

Features a melamine tube body, dual-element construction, non-indicating operation and ferrule end connections. Its nominal 10.3 x 38.1 mm cartridge dimensions support installation in compatible industrial Class CC fuse holders and fuse blocks.

Applications

Small industrial control transformer protection
Industrial control panels requiring Class CC fuses
Compatible low-current AC branch circuits
Industrial electrical line protection
Control circuits with temporary transformer inrush currents
Industrial machinery control equipment
Compatible Class CC DIN-rail fuse holders and fuse blocks
Exact-model industrial equipment fuse replacement

Purchase Information

We support online purchase of the Bussmann FNQ-R-3-1/2 Class CC Time-Delay Fuse. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is the Bussmann FNQ-R-3-1/2?
It is a 3.5 A, 600 VAC Class CC current-limiting time-delay cartridge fuse from the Eaton Bussmann LIMITRON FNQ-R series, designed for compatible industrial control and branch-circuit applications.

Who manufactures FNQ-R-3-1/2?
FNQ-R-3-1/2 belongs to the Eaton Bussmann product range. Its manufacturer catalog number is FNQ-R-3-1/2.

What is the current rating?
The rated current is 3.5 amperes, equivalent to 3500 milliamperes or three and one-half amperes.

What is the AC voltage rating?
The published maximum AC voltage rating is 600 VAC. The operating circuit voltage must remain within the fuse's applicable electrical rating.

Is FNQ-R-3-1/2 a time-delay fuse?
Yes. Eaton identifies FNQ-R-3-1/2 as a high-inrush time-delay fuse. Its product specifications list a response time of 12 seconds at 200% of rated current. Actual opening time depends on the applied overcurrent and operating conditions.

What is the interrupting rating?
Eaton specifies a 200 kA RMS symmetrical interrupting rating at 600 VAC, equivalent to 200,000 amperes.

What are the physical dimensions?
The nominal dimensions are 10.3 mm in diameter and 38.1 mm in length, approximately 0.41 inch by 1.50 inches.

Does FNQ-R-3-1/2 have a blown-fuse indicator?
No. Eaton identifies FNQ-R-3-1/2 as a non-indicating cartridge fuse without a built-in visual blown-fuse indicator.

What material and terminal configuration does this fuse use?
Eaton specifies a melamine tube body and ferrule-to-ferrule connections. The fuse features a dual-element, current-limiting Class CC rejection-style design.

Can FNQ-R-3-1/2 replace an FNQ series fuse?
Do not assume interchangeability based on the current rating or cartridge dimensions alone. The FNQ-R series is rated for 600 VAC Class CC branch-circuit protection, while the FNQ series is intended for 500 VAC supplemental overcurrent protection. Their interrupting ratings, rejection features and installation requirements differ.

Is FNQ-R-3-1/2 RoHS compliant?
Yes. Eaton identifies FNQ-R-3-1/2 as RoHS compliant and CE marked. Verify any additional compliance documentation required for your installation.

What should be verified before ordering?
Confirm the exact FNQ-R-3-1/2 catalog number, 3.5 A current rating, 600 VAC voltage rating, 200 kA interrupting capacity, time-delay characteristics, Class CC fuse-holder compatibility and applicable circuit protection requirements. Consult Eaton Bussmann FNQ-R Technical Data 1014 for detailed application guidance.

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