15 kW Mid-Frequency Induction Heater for Metal Heating, Brazing, and Laboratory Applications

The Across International IH-15AB Induction Heater is a high-performance 15 kW mid-frequency induction heating system designed for precision heating applications in laboratories, manufacturing facilities, and industrial workshops.

Operating between 30–80 kHz, this system provides efficient and rapid heating of metals for processes such as brazing, soldering, heat treatment, annealing, cutting, and metal melting. The IH-15AB features a dual-station design, allowing the heater and controller to be separated by up to 7 feet, keeping operators safely away from heat, contaminants, and harsh environments.

With its compact footprint, portable design, and energy-efficient induction technology, the IH-15AB is a reliable and cost-effective solution for factories, laboratories, and workshops where 208–240V single-phase power is available.

⚠ Note: This model is available only in 208–240V single-phase configuration.

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Key Features

15 kW High-Power Induction Heating

Provides up to 15 kW of oscillating power for rapid heating of conductive metals.

Mid-Frequency Heating Technology

Operates within a 30–80 kHz frequency range, ideal for heating small parts and precision metal components.

Dual-Station System

The heater and controller can be separated by 7-foot connection cables, allowing safer operation in high-temperature or contaminated environments.

Portable Design

Lightweight unit with built-in handle allows easy movement around workshops or laboratories.

Energy-Efficient Heating

Induction heating can achieve up to 90% energy efficiency, significantly reducing operating costs compared to conventional heating methods.

Digital Control Panel

Features digital time and current displays for precise heating control.

Remote Foot Switch Operation

Hands-free control using a 7-foot remote foot switch for safer operation.

Automatic and Manual Modes

Supports both automatic cycle operation and manual control depending on application requirements.

Custom Induction Coils

Custom induction coils are available for specialized applications. Coil frequency depends on coil design parameters including:

• Coil diameter

• Number of turns

• Copper tubing diameter

• Total coil length

Across International also provides custom coil fabrication and sample testing at their New Jersey facility.

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Typical Applications

The IH-15AB induction heater is commonly used for:

• Diamond tool brazing

• Copper plumbing soldering

• Heat treatment of automotive components

• Annealing stainless steel containers

• Metal cutting and forming

• Laboratory materials testing

• Metal melting and casting preparation

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Safety Protection Systems

The IH-15AB includes multiple built-in protection systems.

Overvoltage Protection

The machine shuts down when voltage exceeds 245V and resumes operation automatically once voltage returns to normal levels.

Overheat Protection

If the IGBT heat sink temperature exceeds 55°C, the system shuts down automatically.

Overcurrent / Malfunction Protection

Shutdown occurs if:

• Internal components overheat

• Signal interference is detected

• Workpiece shorts the induction coil

• Induction coils touch each other

• Input voltage is too low

• System malfunction occurs

Low Water Pressure Protection

The machine shuts down if cooling water pressure drops below 29 PSI (0.2 MPa).

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Important Operating Guidelines

⚠ Always wear protective equipment and safety goggles when operating the machine.

Additional guidelines include:

• Crucibles must remain covered during operation

• Avoid prolonged no-load operation

• Cooling water must be clean and below 45°C

• Machine must be properly grounded

• Do not use single-turn coils smaller than 4 inches in diameter

• Thread tape must not be used during coil installation

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Technical Specifications

Electrical Requirements

Power supply
208–240V, 50/60 Hz, single-phase

Maximum input current
32 A

Recommended circuit breaker
40 A single-phase

Power distribution cord
8-gauge 3-conductor (8/3 SOOW)

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Heating Performance

Output frequency
30–80 kHz

Heating / retaining current
200 – 600 A

Maximum oscillating power
15 kW

Maximum input power
7 kW

Duty cycle
80%

Heating / cooling timer
1–99 seconds

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Cooling Requirements

Minimum water pressure
≥ 0.2 MPa (29 PSI)

Recommended pump
> 1/4 HP and > 240 GPH

Water flow
0.5 – 1.3 gallons per minute (2–5 L/min)

Water temperature
25–30°C

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Melting Capacity

Approximate maximum melting capacity:

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Dimensions & Weight

Unit weight

• Power supply: 35 lbs

• Capacitor: 25 lbs

Shipping weight
93 lbs

Unit dimensions

• Power supply: 18 × 8 × 17 inches

• Capacitor: 12 × 7.5 × 13 inches

Shipping dimensions
21 × 22 × 23 inches

Connection cable length
7 feet

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Included Components

• IH15AB Power Supply – 1 pc

• IH15AB Capacitor – 1 pc

• Connection Cable (7 ft) – 1 set

• 0–5V Control Cable – 1 pc

• Remote Foot Switch (7 ft) – 1 pc

Induction Coils

Coil #1

• Orientation: Vertical

• Turns: 3

• Inner diameter: 76 mm

• Outer diameter: 90 mm

Coil #2

• Orientation: Vertical

• Turns: 3

• Inner diameter: 50 mm

Total coils included: 2 pcs

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Additional Accessories Included

• Stainless Steel Hose Clamps – 8 pcs

• Fuse – 5 pcs

• Barb Connectors – 3 pcs

• Tee Connector – 1 pc

• Induction Coil Adapter – 2 pcs

• Operation Manual – 1 pc

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Warranty

Manufacturer Warranty Included