Description
Overview
The GEYA GYM10 is a DIN-rail miniature circuit breaker (MCB) rated 1A to 63A in 1P, 2P, 3P and 4P versions, with 3kA, 4.5kA or 6kA short-circuit breaking capacity and B, C or D tripping curves according to IEC/EN 60898-1 and GB/T 10963.1. It protects final circuits against overload and short circuit at 240/415V AC, 50/60Hz, and can also be used for infrequent manual switching of a line. A transparent identification window and a contact position indicator let the installer read the actual switching state of the device, which is useful during commissioning and fault finding in a crowded distribution board.
Working Principle
The GYM10 uses a thermal-magnetic release, the same proven arrangement used across modular MCBs:
- Thermal release — a bimetal strip heats up under sustained overload and trips the mechanism with an inverse time delay, so short starting peaks are tolerated.
- Magnetic release — on a short circuit the solenoid trips the latch within milliseconds.
- Arc control — the arc is driven into the arc chamber, split, cooled and extinguished, then the gases are vented.
- Curve selection — B trips at roughly 3-5 In, C at 5-10 In, D at 10-20 In, matching resistive, mixed and high-inrush loads respectively.
Key Features
- Contact position indication — the indicator reports the position of the contacts, not only the handle position.
- Transparent identification function — a clear window for circuit labelling, so the board stays readable after handover.
- Busbar flexibility — double busbar as standard, single busbar wiring available as an option.
- C65-format module — 18mm per pole (1P 18mm / 2P 36mm / 3P 54mm / 4P 72mm), so it drops into existing enclosure layouts and cover cut-outs without redesign.
- Cage-clamp terminals — accept 0.5mm² to 25mm² conductors, tightening torque 2.0N·m.
- Accessory-ready — can be fitted with auxiliary devices including over/under-voltage protection units and a remote motor operator.
- Material compliance — RoHS 2.0.
Protection and Electrical Data
- Overload and short circuit — 3000A, 4500A or 6000A rated short-circuit capacity, selected by application and prospective fault level.
- Isolation — provides electrical separation of the circuit in the open position, as required by IEC/EN 60898-1.
- Insulation — rated insulation voltage 500V, rated impulse withstand voltage 4kV.
- Endurance — 20,000 mechanical operations and 10,000 electrical operations.
- Enclosure — IP20 degree of protection, intended for installation inside a distribution board.
Installation Notes
- Mounting — clips onto a standard 35mm DIN rail; the clip releases for tool-free removal, so a device can be swapped without dismantling the row.
- Termination — strip the conductor to the marked length, seat it fully in the cage clamp and tighten to 2.0N·m. Re-check terminals after the first load cycles.
- Ambient derating — the ratings are referred to 30°C. Above that, apply the correction factors in the Technical Parameters tab; a fully loaded, densely packed board is the usual reason for nuisance tripping in summer.
- Service — the breaker is a sealed, maintenance-free device. Do not open the housing or adjust the release.
Applications
Final circuit and sub-distribution protection in:
- Residential distribution boards and apartment blocks
- Commercial buildings, offices, retail and hotels
- Light industry, machine tools, precision casting and automotive plants
- Rail, marine, energy and power utility auxiliary circuits
- OEM control panels and modular assemblies built to a C65 layout
Certification and Support
The GYM10 series holds CCC (3C), CE and CB certificates, and is certified for the Brazilian market. Full curves, dimensional drawings and accessory data are available in the technical manual on request.
Need help matching a rating, curve and breaking capacity to your circuit? Send your load list and prospective fault current through the Contact Us form and our engineering team will come back with a selection proposal.
