High-Power 35 kW Industrial Induction Heater for Metal Heating, Brazing, and Heat Treatment

The Across International IH35AB Dual-Station Induction Heater is a powerful 35 kW mid-frequency induction heating system designed for rapid and energy-efficient heating of metals in laboratories, manufacturing environments, and industrial workshops.

Operating within a 30–80 kHz frequency range, the IH35AB provides precise and controlled heating for applications such as diamond tool brazing, copper soldering, metal cutting, heat treatment, and annealing of stainless steel components.

The system features a dual-station configuration, allowing the heating coil assembly and controller to be separated by up to 7 feet. This design enables operators to remain safely away from high temperatures, debris, or corrosive environments while maintaining precise control of the heating process.

With high power output, digital control displays, and efficient cooling systems, the IH35AB is an excellent solution for industrial heating applications requiring reliable performance and precise temperature control.

⚠ Note: This model operates on 460–480 V three-phase power.

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Key Features

35 kW High-Power Induction Heating

Provides up to 35 kW input power, delivering rapid heating of conductive metals.

Mid-Frequency Heating Technology

Operates between 30–80 kHz, making it ideal for heating small parts and precision components.

Dual-Station Heating System

The heater and controller can be separated by 7-foot connection cables, allowing safer operation and flexible positioning in industrial environments.

Precise Digital Control

Digital displays provide real-time monitoring of:

• Output power

• Frequency

• Heating current

• Heating time

Remote Foot Switch Operation

A 7-foot foot switch allows hands-free activation of heating cycles for improved safety and convenience.

Automatic and Manual Operation Modes

Supports both automatic heating cycles and manual operation, allowing flexibility for different heating applications.

Portable Industrial Design

Compact system with built-in handles enables easier relocation within workshops and laboratories.

Custom Induction Coil Options

Custom induction coils can be designed for specialized applications. Coil performance depends on parameters such as:

• Coil diameter

• Number of turns

• Copper tubing size

• Coil length

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

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Typical Applications

The IH35AB induction heater is commonly used for:

• Diamond tool brazing

• Copper pipe soldering

• Automotive component heat treatment

• Annealing stainless steel containers

• Metal forming and cutting

• Industrial metal heating

• Laboratory materials testing

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Safety Features

Overvoltage Protection

The machine automatically shuts down if input voltage exceeds 245 V, activating an alarm and warning indicator.

Overheat Protection

If the IGBT heat sink temperature exceeds 55 °C, the heater shuts down until safe operating conditions are restored.

Overcurrent and Malfunction Protection

Automatic shutdown occurs if:

• Machine components overheat

• Signal interference occurs

• Workpiece causes coil short circuit

• Induction coils touch each other

• Input voltage drops too low

• System malfunction occurs

Low Water Pressure Protection

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

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Important Operating Guidelines

⚠ Always wear protective gear 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 always 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

Model

IH35AB

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Electrical Requirements

Power supply
460 VAC, 50/60 Hz, three-phase

Maximum input current
44 A

Recommended circuit breaker
55 A (3-phase)

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Heating Performance

Output frequency
30–80 kHz

Maximum input power
35 kW

Duty cycle
100 %

Heating timer
1–99 seconds

Dwell timer
1–99 seconds

Cooling timer
1–99 seconds

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Cooling System

Cooling method
Water cooling with rear fan air cooling

Minimum water pressure
≥ 0.2 MPa (29 PSI)

Recommended pump capacity
> 1/4 HP and > 240 GPH

Water flow rate
1.6 gallons per minute (6 L/min)

Recommended water temperature
25–30 °C

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Dimensions & Weight

Controller weight
75 lbs

Heater weight
70 lbs

Power supply dimensions
10.25 × 20.5 × 18 inches (W × D × H)

Coil station dimensions
12 × 18 × 16 inches (W × D × H)

Shipping dimensions
30 × 28 × 29 inches

Connection cable length
7 feet

Foot switch cable length
7 feet

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Included Components

• IH35AB Power Supply – 1 pc

• Connection Cable (7 ft) – 1 set

• Remote Foot Switch (7 ft) – 1 pc

• 0–5 V Cable – 1 pc

• 2-Pin Cable – 1 pc

• 5-Pin Cable – 1 pc

• Power Cable – 1 pc

• Stainless Steel Hose Clamps – 8 pcs

• Fuse – 5 pcs

• Operation Manual – 1 pc

Optional copper tubing induction coils available upon request.

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Warranty

Manufacturer Warranty Included