THQP 2-Pole Plug-In Circuit Breaker 15A-50A 120V/240V

Name: THQP 2-Pole Plug-In Circuit Breaker 15A-50A 120V/240V
Brand: Newtrend or OEM brand
SKU: 1600565680460

BCD Curve:C
Type:MCB
Brand Name:Newtrend or OEM brand
Place of Origin:China
Application:households
Material:Polycarbonate
Model Number:THQP
Mounting Type:Snap-on Mounting
Rated Frequency (Hz):50/60Hz
Protection:LSIG
Breaking Capacity:10kA
Rated Voltage:120V/240V
width:1/2″ Module x 2

Poles

Rated Current

Description

THQP 2P 120V 240V THQP215 THQP220 THQP225 THQP230 THQP235 THQP240 THQP245 THQP250 2 Pole 15A 20A 25A 30A 40A 50A circuit breaker

Type	THQP (1/2″ Module)
Number of Poles	1P	2P
Rated Current	15, 20, 25, 30, 35, 40, 45, 50A
Maximum Voltage	120/240V	120/240V
Breakage Capacity	10kA	10 kA
Protection	Thermal Magnetic
Connection	Plug-In

THQP 1/2″ Circuit Breaker	AMP	1 Pole	2 Pole
THQP 1/2″ Circuit Breaker	AMP	120/240V	120/240V
	15A	THQP115	THQP215
	20A	THQP120	THQP220
	25A	THQP125	THQP225
	30A	THQP130	THQP230
	35A	THQP135	THQP235
	40A	THQP140	THQP240
	45A	THQP145	THQP245
	50A	THQP150	THQP250

Additional information

Weight	0.3 kg
Dimensions	10 × 10 × 10 cm
Rated Current	10A, 15A, 20A, 25A, 30A, 40A, 50A, 60A
Poles	2P

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for THQP 2-Pole Plug-In Circuit Breaker 15A-50A 120V/240V.

📥

Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

📐

2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Curve Selection

How to choose between Tripping Curves B, C, and D for this miniature circuit breaker?

Curve B trips at 3–5 In (designed for resistive loads, electric heating, and domestic appliances with negligible inrush). Curve C trips at 5–10 In (the standard international choice for residential and commercial lighting, socket outlets, and small induction motors). Curve D trips at 10–14 In (specifically engineered for high-inrush inductive equipment such as industrial transformers, heavy motors, compressors, and welding circuits).

Breaking Capacity

How do I determine whether 6kA or 10kA breaking capacity is required for my installation?

Breaking capacity (Icn/Icu) must exceed the calculated prospective short-circuit fault current at the installation point. 6kA (IEC 60898-1) is standard for residential consumer units and sub-distribution branch circuits located downstream. 10kA (IEC 60947-2) is required for industrial facilities, main switchboards, commercial distribution panels, or circuits situated close to supply transformers where fault levels are high.

Poles & Neutral Isolation

How to choose the correct number of poles (1P, 1P+N, 2P, 3P, 3P+N, 4P) for single-phase and three-phase circuits?

For single-phase 230V circuits: 1P provides active phase protection; 1P+N or 2P isolates both live and neutral lines simultaneously (essential for TT earthing systems and sensitive sub-panels). For three-phase 400V systems: 3P protects balanced 3-wire motor loads; 3P+N or 4P is required for 4-wire mixed single-phase loads to ensure complete neutral disconnection during isolation.

DC vs AC Application

Can this circuit breaker be used in DC circuits (Solar PV, Battery Storage, Telecom)?

Standard AC breakers cannot safely extinguish DC arcs due to the absence of natural zero-crossing current. For DC circuits (60V to 1000V DC), select specialized DC breakers (such as DZ158-125 DC or NM8NDC series) equipped with permanent magnetic arc-blowout chutes and strictly observe polarity wiring to prevent arc re-ignition.

Modular Accessories & Interlocks

What modular accessories and mechanical interlocks can be fitted to this breaker?

Standard modular clip-on accessories can be mounted directly on the side without tools: OF (Auxiliary Contact for remote status indication), SD (Alarm Contact for trip fault signaling), MX (Shunt Trip for remote emergency tripping), MN (Under-voltage Release for voltage loss protection), and NXBZ mechanical interlock kits for manual generator/mains transfer switches.