X10212 UNITEDAUTOMATION | Alldatasheet

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YOU MUST READ THIS BEFORE INSTALLATION ELECTRICAL SAFETY INSTALLATION REQUIREMENTS USER RESTRICTIONS USAGE ENVIRONMENT HOT SURFACE WARNING WARNING: RISK OF ELECTRIC SHOCK Always consult the Installation & Maintenance Instructions before connecting this product to the power supply. WARNING: Disconnect Power Before Servicing Ensure the electrical supply is safely disconnected before connecting to any supply, load, or control terminals. WARNING: Installation by Qualified Personnel Only This product must only be installed or fitted by a competent, qualified installer familiar with the relevant electrical standards and installation practices. WARNING: Not for Use by Vulnerable Individuals This product is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they are supervised or instructed by a person responsible for their safety. WARNING: Industrial Use Only This is an industrial-grade product and is not intended for household use. WARNING: Hot Surfaces On certain models, surfaces marked with this symbol become hot during use. Avoid direct contact and follow all thermal safety precautions. More Info: https://united-automation.com/general-product-safety-regulation-gpsr/

1 July 2025 | Issue: 9 Page 1 of 2

Variable AC Voltage Regulators BVR-25 series X10212 25A - 110 / 230V AC Variable Burst Fired AC Regulator 0044 (0) 1704-516 501 enquiries@united-automation.com www.united-automation.com CONTACT US: KEY FEATURES: Introducing the BVR-25 series, a robust OEM 25A AC energy regulator designed for precise proportional linear manual control of resistive loads. Utilising burst fire control, this advanced regulator delivers variable on/off bursts of complete main cycles of energy, aligned with mains zero crossover. Achieving a full 0 to 100% output range, the BVR-25 allows for block bursts with adjustable block lengths, ranging from rapid burst fire mode to a variable duty cycle of 1 to 30 seconds. The BVR-25 series combines high performance and ease of use, making it a preferred choice for controlling resistive loads in industrial and commercial settings.  Integrated High-Speed Fuse: Ensures reliable protection and operation.  Built-In Heatsink & Mounting Plate: Facilitates efficient heat dissipation and easy installation.  Radio Frequency Interference (RFI) Free: Delivers clean, interference- free operation.  Single-Entry Cable Gland: Simplifies wiring and installation.  Control Knob and Dial Supplied: Provides user- friendly control.  110V or 230V Models Available: Versatile voltage options for various applications.  Variable Duty Cycle Range 1-30s: Adjustable by duty cycle trimmer for precise control.  Rapid Burst Fire Mode: Achievable with duty cycle trimmer fully anti-clockwise. TECHNICAL SPECIFICATIONS Mains voltage 110 or 230V AC ± 10% Frequency 50-60Hz Max. rms load current 25A Integral Triac 41A (600v) Main control signal 220kΩ potentiometer Peak cycle surge 250A Heatsink 1.3ºC/W Isolation classification Class II Min. load current 200mA Isolation voltage 2500V rms I2t for SCR fusing 250A2 Replacement fuse 30A 660V SCR type Offstate dv/dt 500V/µs Max operating temp. 65ºC Storage temp. 0ºC to 65ºC Max. cable entry 2.5mm² APPLICATIONS: The BVR-25 series is ideal for a wide array of resistance heaters including: ovens, electric furnaces, moulders, dryers, smelters, heating tapes, stress-relieving equipment, space heating, and heating mantles. Please note, this unit is not suitable for lighting and inductive loads.

X10212 Variable AC Voltage Regulators BVR-25 series 25A - 110 / 230V AC Variable Burst Fired AC Regulator BMF House - Wight Moss Way, Southport Business Park Southport PR8 4HQ ENGLAND, UNITED KINGDOM Contact Us:  0044 (0) 1704-516 501  enquiries@united-automation.com  www.united-automation.com unitedautomationltd UA_Limited 1 July 2025 | Issue: 9 Page 2 of 2 INSTALLATION - DIMENSIONS & CONNECTIONS FUSING A semiconductor (fast-acting) type fuse (stock code F11307) is supplied as standard for unit protection. On initial ‘switch on’ some loads may need an increased Factor of Safety (F of S) for unit and/or device protection. For spares or replacements contact our sales desk. CE Marking This product family carries a “CE” marking and incorporates a filter. For more information see recommendations section and contact our sales desk, see Declaration of Conformity. RECOMMENDATIONS DOCUMENTS Other documents available on request, which may be appropriate for your application: Code Identity Description X10213 ITA Interaction: Uses for phase angle and for burst fire control X10255 SRA Safety Requirements: Addressing the Low Voltage Directive (LVD) including, Thermal Data/Cooling, Live Parts Warning, Earthing Requirements and Fusing Recommendations P01.1 COS UAL Conditions of Sale It is recommended that installation and maintenance of this equipment should be done with reference to the current edition of the I.E.T. regulations (BS7671) by suitably qualified/trained personnel. The regulations contain important requirements regarding the safety of electrical equipment. For International standards refer STANDARDS on D of C. OPTIONAL EXTRAS Product Code Product Description N30001 Control Knob RN-113B F11307 Fuse, 30A, 660V HS (SCR type) ferrule fuse (Ø 10mm x 38mm long) L60015 Dial Type PRODUCT CODE AND RELATED PRODUCT CODE Product Code Product Description A28211 BVR-25 series 25A 230VAC Burst Firing AC Regulator A28111 BVR-25 series 25A 110VAC Burst Firing AC Regulator