Technical Procurement Guide & Compliance Insight
In modern industrial automation, power electronics serve as the single most critical dependency for control loops, programmable logic controllers (PLCs), edge computing gateways, and safety instrumentation systems. A single power supply failure causes severe operational downtime, corrupted data telemetry, and costly hardware damage. Micro Power, manufactured by Sanstar Microsystems Pvt. Ltd. in Nagpur, India, designs and builds high-reliability, BIS Approved DIN Rail SMPS solutions that withstand harsh ambient conditions, extreme voltage fluctuations, and intense electrical noise.
The Bureau of Indian Standards (BIS) mandatory certification (governed by safety standard IS 13252 Part 1 / IEC 60950-1) is far more than a regulatory hurdle—it is an aggressive benchmark for thermal performance, electrical isolation, dielectric strength, and electromagnetic compatibility (EMC). For international procurement teams sourcing under 'China+1' supply chain strategies, Micro Power's BIS-certified DIN rail power supplies represent the benchmark of Indian manufacturing quality, offering documented MTBF exceeding 500,000 hours and superior power density.
Inside Sanstar Microsystems: Automated magnetic winding, surface-mount technology (SMT), vacuum impregnation, and rigorous high-voltage flash testing at our MIDC Hingna Road facility in Nagpur, India. Learn more in our video showcase.
Flagship Solution
Engineered specifically for PLC cabinets, SCADA RTUs, distributed control systems (DCS), and motor control centers (MCC), delivering rock-solid 24V DC output under 150% peak load surges.
Industrial loads such as solenoid valves, heavy relays, magnetic starters, and capacitive touch HMIs generate high startup current surges. Standard power supplies shut down under these transient overload conditions. Micro Power’s BIS Approved 24V DIN Rail SMPS handles 150% power boost for 3 seconds without voltage droop, eliminating false trips and system resets.
Equipped with an ultra-slim aluminum/polycarbonate housing, flame-retardant V-0 grade enclosures, and tool-free TS-35 DIN rail mounting clips, this unit reduces panel footprint while maximizing convection cooling efficiency.
Comprehensive Product Portfolio
Explore our field-proven power supplies tailored for specific industrial application profiles, output requirements, and environmental severities.
Specifically engineered for access control cabinets, biometric terminals, security sensors, CCTV node concentrators, and 12V telemetry RTUs. Features low ripple & noise (<50mVp-p), adjustable DC voltage trim (12V to 14V DC), and full short-circuit self-recovery protection.
The core power engine for industrial automation. Available in power ratings from 30W up to 480W. Built with premium 105°C long-life electrolytic capacitors, high dielectric isolation (3000VAC I/P-O/P), and integrated DC-OK relay contacts for remote status monitoring.
Designed for industrial Ethernet PoE switches, 48V telecom equipment cabinets, and remote terminal units. Delivers stable 48V to 56V DC voltage with active Power Factor Correction and high surge immunity compliant with EN 61000-4-5 severe lightning profiles.
Provides zero-transfer-time switchover to emergency battery backup during AC grid outages. Combines an intelligent power supply, battery charger, and battery health diagnostic system in one DIN rail chassis. Eliminates AC inverter power conversion losses.
Enables parallel connection of two or more BIS Approved DIN Rail SMPS units to create fault-tolerant N+1 redundant DC power buses. Features built-in decoupling MOSFETs/diodes and dry contact alarm signal relays for continuous power availability.
Space-saving dual-function power solution. Powers critical 12V or 24V DC panel loads while maintaining battery trickle charge. Incorporates deep-discharge cutoff, reverse battery protection, and mains failure notification signals.
Enterprise Reliability & E-E-A-T Excellence
Backing every product with over three decades of in-house power electronics design, rigorous manufacturing discipline, and complete compliance documentation.
Founded in 1994 under Sanstar Microsystems Pvt. Ltd., our engineering leadership brings deep practical domain expertise in magnetics design and power conversion topology.
Our MIDC Hingna Road manufacturing facility in Nagpur features strict ESD anti-static floor controls, automated component insertion, and climate-controlled assembly lines.
Products are rigorously tested to meet IS 13252, CE safety directives, and UL 60950 standards. Full type-test reports and compliance certificates are available for every production lot.
Custom transformer winding, inductor design, and vacuum varnish impregnation performed in-house, ensuring absolute quality control over isolation barrier components.
We use Japanese electrolytic capacitors rated at 105°C and high-grade power MOSFETs derated to at least 40% of peak rated current to ensure maximum field operational lifespan.
Our dedicated engineering team customizes form factors, voltage output taps, conformal coatings, and alarm signal contacts for specialized OEM panel applications.
Every single power supply unit undergoes full-load thermal burn-in testing at 50°C ambient before passing through automated functional parameter verification.
Streamlined logistics and ERP-driven supply chain management ensuring fast dispatch for international system integrators across Europe, Middle East, Asia, and the Americas.
Industry Insights & Market Dynamics
How changing energy efficiency standards, supply chain regionalization, and smart grid automation are shaping the next generation of industrial power electronics.
Global procurement directors are actively migrating away from single-source reliance on East Asian manufacturing hubs. India’s power electronics ecosystem, backed by government infrastructure support and mandatory Bureau of Indian Standards (BIS) quality enforcement, has emerged as the premier alternative for top-tier OEMs.
Micro Power’s fully integrated manufacturing facility in Nagpur delivers supply chain resilience, transparent component sourcing, and direct factory technical support without risk of geopolitical trade disruptions.
With industrial facilities driving toward net-zero targets and reduced carbon footprints, power supply efficiency specifications have tightened. Future DIN rail SMPS designs must achieve efficiency ratings above 94% while maintaining active Power Factor Correction (PFC > 0.98) across wide load spectrums (10% to 100%).
Our BIS Approved DIN Rail SMPS series incorporates advanced resonant switching topologies and low-loss synchronous rectification, drastically reducing heat dissipation inside control panels and extending internal component life.
Control cabinet real estate has become extremely premium. System integrators require ultra-compact DIN rail power supplies that deliver high wattage in slim enclosures (down to 32mm width for 120W models). Simultaneously, expansion into outdoor solar SCADA, railway trackside cabinets, and process industries demands resistance against corrosive atmospheres, high humidity, and severe vibration.
Micro Power offers optional conformal coating (Type UR polyurethane/acrylic resin) and ruggedized vibration-proof DIN rail mounting brackets rated for up to 5G mechanical shocks.
Traditional AC UPS systems are increasingly being replaced by direct DC UPS solutions in critical control enclosures. Converting AC to DC, back to AC inside a traditional UPS, and then back to DC at the power supply input wastes up to 25% of input energy. Integrated DC UPS modules route power directly from the SMPS DC bus to the load, using lithium-ion or sealed lead-acid (SLA) batteries as direct backup.
This architectural shift provides higher energy density, zero millisecond transfer delay, and intelligent Modbus/SNMP diagnostics for predictive maintenance.
Build-to-Specification
From specialized voltage configurations to extreme ambient operating profiles, see how our R&D team solves complex industrial power requirements.
Custom-built 110V DC input to 24V DC DIN rail converter system with active diode ORing for electrical substation protection relays and breaker tripping coils.
Hot-swappable 24V float-boost charger designed for mission-critical engine starting batteries in hyperscale data centers, integrated with BMS alarm relays.
Ultra-wide input (66V to 160V DC) DIN rail power supply compliant with EN 50155 railway standards for shock, vibration, and extreme electromagnetic noise immunity.
Proven Industry Deployments
Our BIS Approved DIN Rail SMPS units are installed in demanding industrial infrastructure environments across India, Southeast Asia, the Middle East, and Europe. Whether powering precision PLC logic controllers, railway trackside telemetry, high-definition IP camera networks, or substation VCB trip panels, Micro Power delivers continuous power performance without compromise.
PLC enclosures, SCADA RTU nodes, distributed control panels, motor control centers (MCC), packaging machinery, textile automation, and food processing lines.
City surveillance IP cameras, high-power PoE switches, automated access control turnstiles, addressable fire alarm control panels, and emergency evacuation loops.
Vacuum Circuit Breaker (VCB) control panels, substation protection relays, solar PV string monitoring boxes, wind turbine control pitch systems, and smart meters.
Trackside signalling cabinets, automated fare collection (AFC) gates, telecom base transceiver stations (BTS), and emergency railway communications.
Global Procurement FAQ
The Bureau of Indian Standards (BIS) mandates compulsory registration under the Electronics and Information Technology Goods (Requirement for Compulsory Registration) Order for power supplies (governed by safety standard IS 13252 Part 1). Deploying non-BIS approved SMPS in commercial or industrial projects within India violates national safety regulations, leads to custom delays for imported equipment, and voids project insurance coverage. Micro Power's BIS Approved DIN Rail SMPS carries full official certification and test verification.
Standard IS 13252 (Part 1):2010 evaluates critical electrical and physical safety metrics, including creepage distance and clearance measurements, dielectric withstand voltage (3000VAC isolation testing), impulse voltage withstand, temperature rise limits under continuous full-load, earth leakage current limits (<3.5mA), mechanical strength impact testing, and flammability testing for internal plastic components (V-0 rating).
We achieve calculated MTBF figures exceeding 500,000 hours (per MIL-HDBK-217F) through conservative electrical derating rules. We exclusively use Japanese 105°C electrolytic capacitors, oversized MOSFET switches rated for high peak voltage spikes, and heavy-duty ferrite cores in our transformer topologies. Furthermore, all units undergo 100% elevated temperature full-load burn-in testing prior to delivery.
Yes. As an original design manufacturer (ODM) with complete in-house R&D and magnetics manufacturing at Nagpur, India, Sanstar Microsystems can customize output voltages (such as 5V, 12V, 15V, 24V, 48V, or non-standard custom voltages), trim ranges, current limits, parallel operation capability, and custom physical form factors based on OEM order quantities.
A standard DIN Rail SMPS converts incoming AC mains power to a regulated DC voltage output. However, if the mains AC supply drops out, the DC output collapses immediately. An industrial DC UPS system combines the AC-DC SMPS function with an integrated battery management system. When mains AC fails, the DC UPS switches to external backup batteries with zero transfer millisecond disruption, ensuring seamless uninterrupted operation of PLCs, edge controllers, and alarm monitors.
In critical installations, two identical BIS Approved DIN Rail SMPS units are wired in parallel through a Micro Power Redundancy Module. The module uses high-efficiency decoupling diodes or ideal MOSFETs to isolate the two power supplies. If one power supply unit fails due to an internal component short circuit or AC power loss, the redundancy module prevents back-feeding and instantly routes 100% of the load current from the remaining healthy SMPS without dropping the DC bus voltage.
We maintain comprehensive stock of standard 12V, 24V, and 48V BIS Approved DIN Rail SMPS units for immediate dispatch. Standard lead times for custom bulk OEM production orders typically range between 2 to 4 weeks depending on batch volume. We offer full export documentation, Certificate of Origin (COO), BIS registration letters, CE compliance certificates, and customized OEM white-label branding options.
Discuss your power supply specifications, request custom engineering samples, or receive factory-direct wholesale pricing for bulk OEM orders from Micro Power’s engineering team.
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