XCF-25 Fuse Terminal Block | Technical Product Specification & Sourcing Guide

The XCF-25 is a DIN-rail mount fuse terminal block for industrial control panels, motor control centers (MCC), and low-voltage power distribution applications. It combines conductor termination and cartridge fuse mounting in a modular terminal block configuration for circuit protection and panel wiring.

The terminal block uses a PA66 insulated housing, a copper-alloy current path, and screw-type conductor clamping. Available configurations support different fuse sizes, current ratings, and optional LED blown-fuse indication.

For applications requiring specific electrical ratings, fuse compatibility, or compliance documentation, the final selection should be based on the complete product datasheet and the installed fuse-link specifications.

Key Features

Cartridge Fuse Integration
The XCF-25 series is designed to accommodate specified cartridge fuse sizes within the terminal block assembly, combining fuse mounting and conductor termination in one DIN-rail-mounted component.

Screw-Type Conductor Clamping
The conductor connection uses a screw-clamping structure for mechanical termination of compatible rigid or flexible copper conductors.

PA66 Insulating Housing
The housing is manufactured from Polyamide 6.6 (PA66). Where applicable, the material can be specified with a UL94 V-0 flame-retardant rating, subject to the confirmed material grade and test documentation.

DIN-Rail Mounting
The XCF-25 series is designed for installation on compatible 35 mm DIN rails, allowing the terminal blocks to be arranged within electrical control cabinets and distribution assemblies.

LED Blown-Fuse Indication
Selected variants are available with an integrated LED indicator for visual identification of a blown fuse. Indicator voltage range and circuit configuration depend on the specific model.

Modular Accessories
Available accessories may include end brackets, partition plates, and plug-in bridges for applications requiring adjacent terminal interconnection or assembly configuration.

Product Range

Part Number	Configuration	Rated Voltage	Rated Current	Conductor Size	Compatible Fuse
XCF-25-A	Standard fuse terminal block	500 V AC/DC	25 A	0.5–4.0 mm²	5 × 20 mm
XCF-25-L	LED blown-fuse indicator version	24–240 V AC/DC*	25 A	0.5–4.0 mm²	5 × 20 mm
XCF-25-HE	Higher-current configuration	600 V AC/DC	30 A	0.5–6.0 mm²	6.3 × 32 mm

Confirm the applicable AC/DC voltage range and indicator circuit configuration against the model-specific datasheet before publication.
AWG reference: 0.5–4.0 mm² corresponds approximately to 20–11 AWG, while 0.5–6.0 mm² corresponds approximately to 20–10 AWG. The exact conductor range should be stated according to the manufacturer's certified product data.

Technical Specifications

Specification	XCF-25 Series
Product Type	DIN-rail mount fuse terminal block
Housing Material	Polyamide 6.6 (PA66)
Current-Carrying Part	Copper alloy
Surface Treatment	Tin/nickel plating, according to confirmed model specification
Clamping Screw	Zinc-plated carbon steel
Mounting Rail	35 mm DIN rail
Rail Dimensions	35 × 7.5 mm / 35 × 15 mm, subject to model compatibility
Recommended Tightening Torque	0.5–0.6 Nm*
Dielectric Withstand Voltage	>2.5 kV*
Contact Resistance	<1.5 mΩ*
Fuse Type	Cartridge fuse, according to model
Fuse Dimensions	5 × 20 mm or 6.3 × 32 mm
Optional Indicator	LED blown-fuse indication on selected models
Compliance	IEC / UL / RoHS / REACH, according to applicable model and documentation

These values should be verified against the controlled product datasheet or test report before publication.
For fuse terminal block applications, the applicable product standard should also be confirmed. IEC 60947-7-3 specifically addresses safety requirements for fuse terminal blocks, while IEC 60947-7-1 covers terminal blocks for copper conductors more generally.
For DIN-rail dimensional compatibility, IEC 60715:2017 provides the relevant standardized rail requirements.

Applications

Industrial Control Panels
Used for fused circuit connections within industrial automation cabinets, machine control panels, and electrical control assemblies.

CNC and Machinery Control Systems
Suitable for control-panel circuits where conductor termination and cartridge fuse protection are integrated within a DIN-rail terminal assembly.

Low-Voltage Distribution
Applicable to specified low-voltage distribution and auxiliary circuits where the terminal block's rated voltage, current, fuse size, and short-circuit characteristics meet the system requirements.

Renewable Energy and Auxiliary Circuits
Potential applications include specified auxiliary circuits in solar, wind, and energy-storage equipment, subject to system voltage, current, environmental, and protection requirements.

HVAC Control Panels
Used in compatible commercial and industrial HVAC control cabinets for fused control and auxiliary circuits.
The actual application suitability should be determined from the electrical ratings, fuse characteristics, conductor size, environmental conditions, and applicable system standards rather than from the application category alone.

Customization & OEM/ODM Capabilities

Housing Color
Standard housing colors can be supplied according to the standard product configuration. Custom colors such as blue, black, or orange may be available for qualified production quantities.

Laser Marking
Custom part numbers, circuit identifiers, customer codes, and brand markings can be considered for laser marking on the housing.

Pre-Assembled Accessories
The terminal block can be supplied with selected accessories, including end brackets, partition plates, and plug-in bridges, according to the required assembly configuration.

Custom Tooling
For applications requiring modified housing geometry or customized current-carrying components, tooling and engineering changes can be evaluated from customer drawings or 3D CAD files.
Available customization should be confirmed according to tooling requirements, production quantity, electrical design, and product certification requirements.

Manufacturing & Quality Control

Injection Molding
PA66 housings are produced through injection molding. Production equipment includes Haitian injection molding machines in the 120T–250T range, according to the manufacturing configuration.

Metal Stamping and Plating
Current-carrying components are formed through metal stamping and subsequently plated according to the specified material and surface-treatment requirements.
Where plating thickness or corrosion performance is specified, the applicable coating specification and test method should be provided in the product quality documentation.

Dimensional Inspection
Critical molded and assembled dimensions are inspected according to controlled production specifications. Any stated dimensional tolerance should be supported by production drawings and inspection records.

Electrical and Mechanical Testing
Product testing may include dielectric withstand testing, conductor pull-out testing, thermal testing, and other inspections required by the applicable product specification or standard.
Where IEC compliance is claimed, the applicable test standard, test conditions, and supporting documentation should be identified rather than using a general statement such as "tested to IEC standards."

Frequently Asked Questions

Q: What fuse size is compatible with the XCF-25?

A: The standard configurations listed for the XCF-25 series accommodate 5 × 20 mm or 6.3 × 32 mm cartridge fuses, depending on the model. The compatible fuse-link type, rated voltage, current, and breaking capacity must be checked against the specific model datasheet.

Q: What is the breaking capacity of the XCF-25?

A: The breaking capacity should not be stated as a fixed value without identifying the applicable fuse-link and test conditions. The fuse-link's rated breaking capacity and the terminal block's applicable short-circuit characteristics should be evaluated together.

Q: Can XCF-25 terminal blocks be cross-connected?

A: Selected configurations can use compatible plug-in bridges or insertion bridges for electrical interconnection between adjacent terminal blocks. The applicable bridge type and number of connected positions should be confirmed for the specific terminal block configuration.

Q: What wire size can the XCF-25 accept?

A: The listed models support conductor sizes from 0.5–4.0 mm² or 0.5–6.0 mm², depending on the model. The final conductor type, preparation requirements, stripping length, and clamping torque should follow the product datasheet.

Q: Are LED indicator versions available?

A: Yes. The XCF-25 series includes an LED indicator configuration. The applicable indicator voltage range and wiring arrangement depend on the specific model and should be checked against the electrical schematic.

Q: Is custom marking available?

A: Custom laser marking can be considered for part numbers, circuit identification, customer codes, or brand markings. MOQ, marking area, artwork format, and production lead time should be confirmed before order placement.

Q: What documentation is available for bulk orders?

A: Available documentation may include product datasheets, drawings, 3D STEP files, certificates of conformity, and applicable RoHS/REACH documentation. Material or test reports should be confirmed according to the customer's documentation requirements and the actual supply arrangement.

RFQ / Technical Inquiry

For product selection and quotation, please provide the following information:

Required Information	Details
Application	Control panel, machinery, distribution, HVAC, renewable energy, etc.
System Voltage	AC or DC voltage
Required Current	Continuous operating current
Fuse Size	5 × 20 mm, 6.3 × 32 mm, or other
Fuse Specification	Fuse type, rated current, voltage, and breaking capacity
Conductor Size	Required wire cross-section
DIN Rail	35 × 7.5 mm, 35 × 15 mm, or other
Indicator	Standard or LED indicator version
Accessories	Bridges, end brackets, partition plates, etc.
Quantity	Sample quantity and estimated annual volume
Customization	Housing color, marking, branding, or dimensional modification
Documentation	Datasheet, CAD model, CoC, RoHS/REACH, test reports, etc.

For technical evaluation, customers can submit their electrical specifications, panel drawings, BOM requirements, or 3D CAD files for model selection and quotation.

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