Name: GYM9H-10KA Miniature Circuit Breaker - GEYA Electrical
SKU: GYM9H-10KA
Rating: 4.00 (2 reviews)

Description

GYM9H-10kA Miniature Circuit Breaker — Overview

The GYM9H-10kA MCB is a high-performance 10kA miniature circuit breaker (10kA circuit breaker) designed for AC 50/60Hz circuits with rated voltage up to 240/415V and rated current up to 63A, providing reliable overload and short-circuit protection together with circuit isolation. Compliant with IEC/EN 60898-1 and GB/T 10963.1 and certified by CE / CB / SAA, the GYM9H-10kA is suitable for industrial facilities, commercial buildings, high-rise structures and residential applications where a 10kA breaking capacity MCB, B/C/D tripping curves and a compact 18 mm-per-pole DIN-rail format are required.

The GYM9H Value Proposition:

GYM9H-10kA matches premium tier-1 10kA MCBs on the metrics that matter most for daily operation — 10,000-cycle electrical life, 20,000-cycle mechanical life, IEC/EN 60898-1 10kA breaking capacity and B/C/D curves — while delivering a dramatically more economical total cost of ownership. For projects where every panel position counts, GYM9H-10kA gives you certified high-breaking performance without the premium-brand price tag.

Key Features

High performance: Up to 10 kA breaking capacity and rated currents up to 63 A.
Compact solution: 1 standard module (18 mm) per pole — installs directly onto 35 mm DIN rail (TH35-7.5).
Full electrical isolation in compliance with IEC 60898 — safe disconnection for downstream maintenance.
Expandability: Accepts a wide range of optional accessories including auxiliary contacts, alarm contacts, shunt trip, under-voltage release and remote / motorized operating mechanisms.
Dual busbar connection for flexible, efficient wiring in distribution boards.
Transparent ID window and contact-position indicator for at-a-glance status verification.
Wire size: 0.5 – 25 mm² · Tightening torque: 2.0 N·m.
RoHS 2.0 compliant — environmentally responsible manufacturing.

Typical Applications

🏭 Industrial

Sub-distribution and final-circuit protection in factories and workshops.

🏢 Commercial

Offices, retail, hotels, schools, hospitals — lighting, HVAC and socket circuits.

🏬 High-Rise

Riser distribution boards in tall buildings where higher fault levels demand 10kA.

🏠 Residential

Consumer units and apartment distribution boards demanding certified safety.

Product Model Designation

GYM9	H
Product model (MCB)	H = 10,000 A breaking capacity (None = 6,000 A)

Competitive Comparison vs. Tier-1 Brand 10kA MCB

The following side-by-side compares GYM9H-10kA with a representative tier-1 European-brand 10kA MCB (Schneider Acti9 iC65H) on the key selection parameters. GYM9H matches the competitor on the metrics that drive day-to-day reliability, with a clear advantage on price-to-performance.

Parameter	GYM9H-10kA (GEYA)	Top-tier brand MCB (reference)
Standards	IEC/EN 60898-1, GB/T 10963.1	IEC/EN 60898-1, IEC/EN 60947-2
Poles	1P / 2P / 3P / 4P	1P / 2P / 3P / 4P
Rated Current (In)	1 – 63 A	1 – 80 A
Rated Voltage (Ue)	230/400V (240/415V)	230/400V
Icn (IEC 60898-1)	10 kA	10 kA
Tripping Curves	B / C / D	B / C / D (+MA)
Mechanical Life	20,000 ops	20,000 ops
Electrical Life	10,000 ops	10,000 ops
Uimp	4 kV	6 kV
Protection Class	IP20	IP20
Module Width	18 mm / pole	18 mm / pole
Price Positioning	★ Highly economical	Premium

Conclusion: GYM9H-10kA is functionally equivalent to the reference tier-1 product on breaking capacity, endurance, pole configurations, IP rating and module footprint. The tier-1 product offers a slightly higher Uimp (6 kV vs 4 kV) and a wider current range up to 80 A; for the vast majority of 1–63 A installation circuits, GYM9H delivers identical certified protection at a materially lower cost.

Outline Overall And Installing Dimensions：

Outline & Installation Dimensions

Dimension	1P	2P	3P	4P
Width (mm)	18	36	54	72
Height (mm)	86.5 ± 0.3 (mounted on TH35-7.5 DIN rail)
Depth (mm)	80 (overall) / 50 (front protrusion)
DIN-rail Slot (mm)	45

Technical Parameters & Specifications

Parameter	Specification
Model	GYM9H-10kA
Product Type	AC Miniature Circuit Breaker (MCB)
Standards	IEC/EN 60898-1, GB/T 10963.1
Certifications	CE · CB · SAA
Rated Current (In)	1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 A
Rated Voltage (Ue)	1P: 240/415V~ ; 230/400V~
Rated Insulation Voltage (Ui)	500 V
Rated Impulse Withstand Voltage (Uimp)	4 kV
Breaking Capacity (Icn)	10 kA (6 kA / 10 kA available)
Operating Frequency	50 / 60 Hz
Tripping Curves	B (3–5 × In) · C (5–10 × In) · D (10–14 × In)
Number of Poles	1P / 2P / 3P / 4P
Mechanical Life	20,000 operations
Electrical Life	10,000 operations
Tightening Moment	2.0 N·m
Wire Size	0.5 – 25 mm²
Protection Class	IP20
Mounting	TH35-7.5 DIN rail
Module Width	18 mm per pole
Connection	Dual busbar connection
Indicators	Transparent ID window · Contact position indicator
Environmental	RoHS 2.0 compliant

Temperature Compensation

When the ambient temperature is not the baseline of 30 °C, multiply the rated current (In) by the correction factor below to obtain the effective continuous current.

Ambient Temp.	-20°C	-10°C	0°C	10°C	20°C	30°C	40°C	50°C	60°C
Correction Factor	1.25	1.20	1.15	1.10	1.05	1.00	0.95	0.90	0.85

Tripping Curves (B / C / D)

GYM9H-10kA is available with three magnetic tripping characteristics so the breaker can be matched precisely to the connected load:

Curve	Magnetic Trip Range	Typical Application
B	3 – 5 × In	Resistive loads, long cable runs, lighting and socket circuits
C	5 – 10 × In	General-purpose: small motors, HVAC, mixed inductive loads (most common)
D	10 – 14 × In	High inrush loads: transformers, large motors, capacitor banks

X-axis: multiples of rated current (×In). Y-axis: tripping time in seconds. Refer to the B/C/D curve diagrams in the product gallery.

Frequently Asked Questions

Q1. What is the GYM9H-10kA?

The GYM9H is a reliable and flexible device that protects electrical systems in various settings, such as homes, offices, tall buildings, and factories. It has a strong 10kA breaking capacity and offers B, C, D tripping curves to handle heavy machinery and high-current loads safely.[[1]](https://www.geya.net/product/gym9h-10ka-1-4-pole-miniature-circuit-breaker/) Within the GYM9 family, the “H” suffix denotes the high-breaking-capacity variant — 10,000 A (10 kA) rated short-circuit breaking capacity per IEC/EN 60898-1, versus 6 kA for the standard GYM9. It comes in 1P/2P/3P/4P configurations from 1 A to 63 A and mounts on a 35 mm DIN rail at 18 mm per pole.

Q2. What functions does it provide?

Overload protection — thermal-bimetal element trips on sustained overcurrent.
Short-circuit protection — instantaneous electromagnetic trip per B/C/D curve, up to 10 kA fault current.
Circuit isolation — full disconnection of the protected circuit for safe maintenance.
Manual switching — suitable for infrequent on/off operations of the circuit.
Status indication — transparent ID window and contact-position indicator.
Expandable functions via auxiliary contacts (AX), alarm contacts (AL), shunt trip (MX), under-voltage release (MN) and motorized / remote operating mechanisms.

Q3. Which key parameters drive model selection?

Rated current (In) — match to the continuous load current, adjusted by the temperature-compensation factor.
Number of poles — 1P for single-phase line, 2P for L+N, 3P/4P for three-phase systems.
Rated voltage (Ue) — confirm the system voltage is within 240/415V AC range.
Prospective short-circuit current — must be lower than the 10 kA breaking capacity at the point of installation.
Tripping curve (B / C / D) — match to load inrush characteristics.
Ambient temperature — apply the correction factor (1.25 at -20 °C → 0.85 at 60 °C).
Accessory requirements — auxiliary / alarm / shunt-trip / UVR / motor operator.

Q4. What configuration options are currently available?

Poles: 1P, 2P, 3P, 4P
Rated current: 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63 A
Tripping curves: B, C, D
Breaking capacity: 10 kA (this model) — Basic 6 kA “GYM9” version is also offered for lower fault-level installations
Accessories: auxiliary contact (AX), alarm contact (AL), shunt trip (MX), under-voltage release (MN), motorized / remote operating mechanism

Q5. Which standards does it meet, and which markets is it designed for?

GEYA GYM9H-10kA is designed and tested to IEC/EN 60898-1 and GB/T 10963.1, is RoHS 2.0 compliant, and carries CE / CB / SAA certifications. It targets:

European, Asia-Pacific, Middle East, African and Latin-American markets that specify IEC/EN-compliant MCBs;
Australian / New Zealand projects requiring SAA approval;
OEM/ODM panel builders making distribution boards, consumer units and industrial control panels;
Cost-sensitive projects needing a certified 10 kA MCB that performs on par with tier-1 brands at a far more economical price point.

Q6. What installation precautions should I follow?

Mounting: Install vertically on a 35 mm DIN rail (TH35-7.5) inside a dry, dust-protected enclosure. The breaker itself is IP20 — the enclosure must provide the final ingress protection.
Wiring direction: Connect the supply to the top terminals; observe phase / N markings on multi-pole versions.
Spacing & ventilation: Provide adequate clearance between adjacent breakers and from heat sources; apply the temperature-compensation factor when ambient exceeds 30 °C.
Tightening torque: Tighten terminal screws to 2.0 N·m using a wire size within 0.5 – 25 mm². No bare wire whiskers outside the terminal.
Pre-energizing check: Verify continuity, insulation resistance and correct ON/OFF indication via the contact-position window before commissioning.
Periodic maintenance: Operate the breaker manually from time to time to confirm mechanical operation; replace if it has interrupted a fault close to its 10 kA rating.
Do not exceed ratings: Never apply DC voltage to this AC MCB — use the GYM9H-DC version for DC circuits.

GYM9H-10KA Miniature Circuit Breaker(1~4 Poles)