New Original Schneider A9N15656 Acti9 STI 3P 32A Fuse Disconnector
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New Original Schneider A9N15656 Acti9 STI 3P 32A Fuse Disconnector
1. Product Overview
A9N15656 is an original Schneider Electric modular fuse disconnector from the premium Acti9 STI product range. It is a 3-pole DIN rail mountable integrated device that combines a safety isolating switch and standard cylindrical fuse holder, designed to accommodate 10.3 mm × 38 mm cartridge fuses. This component is specially developed for three-phase AC low-voltage power distribution circuits in industrial equipment cabinets, automation control panels, commercial power distribution systems, workshop machinery power loops and building auxiliary electrical installations. After installing gG general-purpose fuses or aM motor protection fuses inside each pole, the device can implement circuit isolation maintenance, overload protection and short-circuit fault cutting simultaneously. With unified modular specifications, it can be freely combined with miniature circuit breakers, residual current devices and contactors of the Acti9 series to build standardized low-voltage power distribution frameworks.
2. Main Functions
- Three-phase synchronous circuit isolation: The unified operating handle can cut off three live phases at the same time and form a visible physical breaking gap inside the device, complying with international electrical safety standards for power-off overhaul and equipment maintenance operations.
- Pole-by-pole overcurrent protection: Each independent pole is equipped with an individual fuse cavity; internal fuses will melt rapidly when overload or short-circuit faults occur on any phase, protecting downstream wiring, motors and electrical loads from burnout damage.
- Padlockable operating handle: The main toggle handle can be locked with padlocks at both ON and OFF positions to avoid unauthorized switching and prevent accidental power supply switching on site.
- Compatible fuse blow indicator: Reserved mounting positions for voltage indicator lamps on each pole. The lamp lights up to remind maintenance staff once a fuse is blown on any phase.
- Built-in spare fuse storage slot: An internal storage space is reserved for one spare cylindrical fuse, supporting quick on-site replacement without additional spare part preparation.
- Universal terminal wiring structure: Screw clamping terminals support both rigid solid copper wires and stranded flexible copper wires to adapt to diversified field wiring demands.
- Modular combined layout: Standard width design allows multiple disconnectors and other modular electrical appliances to be arranged side by side on 35 mm DIN rails for centralized circuit management.
3. Technical Specifications
| Item | Specific Parameter |
|---|---|
| Complete Model Number | A9N15656 |
| Product Series | Schneider Acti9 STI Fuse Disconnector |
| Number of Poles | 3 Poles (3P) |
| Rated Working Current | 32 A |
| Rated Operational Voltage | 500 V AC, 50 / 60 Hz |
| Rated Insulation Voltage | 690 V AC |
| Matched Fuse Dimension | 10.3 mm × 38 mm cylindrical cartridge fuse |
| Applicable Fuse Types | gG general distribution fuse, aM motor protection fuse |
| Rated Short-circuit Breaking Capacity | 25 kA |
| Ingress Protection Grade | IP20 for terminal area; IP40 when installed inside enclosed distribution cabinets |
| Wiring Cross-section Range | Rigid wire: 0.75 ~ 10 mm²; Flexible wire: 0.5 ~ 6 mm² |
| Ambient Operating Temperature | -20 °C ~ +60 °C |
| Pollution Degree | Class 3 |
| Compliance Standards | IEC/EN 60947-3, RoHS compliant |
| Mounting Mode | Clip-on installation for standard 35 mm DIN top-hat rail |
| Handle Function | Padlockable at ON and OFF positions |
4. Technical Features
- High-strength flame-retardant thermosetting housing: The outer shell resists electric arc ablation, high temperature and mechanical impact, ensuring stable long-term operation in industrial harsh environments.
- Silver-plated internal conductive contacts: Ultra-low contact resistance effectively avoids abnormal heating under continuous rated load and guarantees stable three-phase current transmission balance.
- Safe visible isolation gap: Clear mechanical disconnection gap after switching off fully meets electrical safety requirements for maintenance work.
- Secure fixed fuse carrier: Each fuse bracket is firmly locked inside the cavity to prevent falling off during replacement and reduce electric shock risks for operators.
- Compact integrated modular structure: Standard module size greatly saves internal space inside electrical control cabinets.
- Excellent environmental adaptability: No obvious performance attenuation under temperature fluctuation and slight condensation conditions.
- Complete Acti9 system compatibility: Perfectly matched with busbars, auxiliary contacts and indicator accessories of the same series for flexible system expansion and transformation.
5. Product Dimensions and Net Weight
| Parameter | Value |
|---|---|
| Overall Module Width | 54 mm |
| Overall Height | 81 mm |
| Overall Depth | 75 mm |
| Single Unit Net Weight | 148 g |
| Recommended Terminal Screw Tightening Torque | 1.2 N·m |
| Applicable Mounting Rail | 35 mm standard DIN rail |
6. Ten Schneider Similar-Function Acti9 STI Series Fuse Disconnectors
All listed products are original Schneider fuse disconnectors for circuit isolation and overcurrent protection with different poles and current specifications:
- A9N15654: 3P 20A three-pole fuse disconnector for medium-current three-phase control circuits
- A9N15655: 3P 25A three-pole variant with intermediate rated current for general three-phase equipment power supply
- A9N15636: 1P 25A single-pole fuse disconnector for single-phase live wire independent protection loops
- A9N15651: 2P 20A two-pole disconnector used for single-phase live and neutral dual-line protection
- A9N15670: 4P 32A four-pole fuse disconnector applied to three-phase four-wire power distribution systems
- A9N15657: 3P 32A unit pre-installed with fuse blown indicator lamps for each phase
- A9N15653: 2P 32A two-pole high-current disconnector for heavy-load single-phase equipment
- A9N15646: 3P 16A miniature three-pole model for low-power three-phase instrument circuits
- A9N15656-H: High-temperature resistant customized version suitable for high-heat workshop environments
- A9N15674: 3P 63A large-current three-pole fuse disconnector for industrial heavy-load main control loops
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