Products
Home » Products » Circuit Breaker » Mini Circuit Breaker

Contact Us

E-mail: info@greenwich.com.cn
Phone: +86-13806684830
Add: Jinsihe Village, Liushi Town, Yueqing, Zhejiang, China

Mini Circuit Breaker

GWIEC PRODUCT SELECTION GUIDE · PRINTED PAGES 01–10

Miniature Circuit Breakers

Select by AC or DC application, pole configuration, rated current, breaking capacity and trip curve.

Compare Earth Leakage Circuit Breakers →

G-L7 High Breaking Capacity Miniature Circuit Breakers

L7-GL-FUSE CATALOG · PRINTED PAGES 01–05

The G-L7 MCB provides overload and short-circuit protection. The catalog includes standard and plug-in G-L7-63 products, separate C and D curve order matrices, and load and energy curves.

G-L7-63 standard variants

G-L7-63 standard variants

G-L7-63 plug-in variants

G-L7-63 plug-in variants

Electrical specifications · p. 02
Parameter Catalog value
Rated operational voltage Ue 230/400 V AC, 50/60 Hz
Rated short-circuit breaking capacity Icn 10 kA for 0.5–63 A as listed on page 02
DC capability noted on page 02 Standard G-L7 single pole: up to 48 V DC, 10 kA; G-L7-DC single pole: up to 250 V DC, 6 kA
Trip characteristics C and D; page 03 lists instantaneous bands of 5–10 × In (C) and 10–20 × In (D)
Backup fuse shown 100 A gL for the condition marked >10 kA
Energy limitation class shown 3
Ambient temperature −5 to +40 °C
Enclosure after installation IP40
Electrical endurance At least 8,000 switching operations
Mechanical endurance At least 20,000 switching operations
Mechanical data · p. 02
Parameter Catalog value
Exposed face height 45 mm
Enclosure height 80 mm
Module width 17.5 mm per pole
Mounting 35 mm DIN rail
Terminals Dual-purpose terminals for busbar and wire
Connection range 1–25 mm² conductor; busbar thickness 0.8–2 mm
Accessories listed · p. 02
Parameter Catalog value
Auxiliary contact G-Z7-AHK
Alarm contact G-Z7-NHK
Shunt release G-Z7-ASA
Undervoltage release G-Z7-USA

Catalog verification. The page 03 2P D-curve column repeats the 1P order codes. Page 04 also prints G-L7-6/1N-2/C in the 3P+N column. Both are reproduced as printed and require confirmation before ordering.

Catalog page 01 · G-L7-63 product overview

G-L7-63 product range
Product Voltage Catalog rated currents
G-L7-63 230/400 V 6, 10, 16, 20, 25, 32, 40, 50, 63 A
Catalog page 01 · G-L7-63 product overview
Open original at full size ↗

Catalog page 01 · G-L7-63 plug-in product overview

G-L7-63 plug-in range
Product Voltage Catalog rated currents
G-L7-63 plug-in 230/400 V 6, 10, 16, 20, 25, 32, 40, 50, 63 A
Catalog page 01 · G-L7-63 plug-in product overview
Open original at full size ↗

Catalog page 02 · Electrical, mechanical and accessory tables

Catalog page 02 · Electrical, mechanical and accessory tables
Open original at full size ↗

Catalog page 03 · Outline and mounting dimensions (mm)

Catalog page 03 · Outline and mounting dimensions (mm)
Open original at full size ↗

Catalog page 03 · 1P, 1P+N and 2P ordering matrix with circuit diagrams

C curve
In (A) 1P 1P+N 2P
0.5 G-L7-0.5/1/C — G-L7-0.5/2/C
1 G-L7-1/1/C — G-L7-1/2/C
2 G-L7-2/1/C — G-L7-2/2/C
3 G-L7-3/1/C — G-L7-3/2/C
4 G-L7-4/1/C — G-L7-4/2/C
6 G-L7-6/1/C G-L7-6/1N-2/C G-L7-6/2/C
10 G-L7-10/1/C G-L7-10/1N-2/C G-L7-10/2/C
16 G-L7-16/1/C G-L7-16/1N-2/C G-L7-16/2/C
20 G-L7-20/1/C G-L7-20/1N-2/C G-L7-20/2/C
25 G-L7-25/1/C G-L7-25/1N-2/C G-L7-25/2/C
32 G-L7-32/1/C G-L7-32/1N-2/C G-L7-32/2/C
40 G-L7-40/1/C G-L7-40/1N-2/C G-L7-40/2/C
50 G-L7-50/1/C G-L7-50/1N-2/C G-L7-50/2/C
63 G-L7-63/1/C G-L7-63/1N-2/C G-L7-63/2/C
D curve
In (A) 1P 1P+N 2P (as printed)
2 G-L7-2/1/D — G-L7-2/1/D
4 G-L7-4/1/D — G-L7-4/1/D
6 G-L7-6/1/D — G-L7-6/1/D
10 G-L7-10/1/D — G-L7-10/1/D
16 G-L7-16/1/D — G-L7-16/1/D
20 G-L7-20/1/D — G-L7-20/1/D
25 G-L7-25/1/D — G-L7-25/1/D
32 G-L7-32/1/D — G-L7-32/1/D
40 G-L7-40/1/D — G-L7-40/1/D
Catalog page 03 · 1P, 1P+N and 2P ordering matrix with circuit diagrams
Open original at full size ↗

Catalog page 04 · 3P, 3P+N and 4P ordering matrix with circuit diagrams

C curve
In (A) 3P 3P+N 4P
0.5 G-L7-0.5/3/C — —
1 G-L7-1/3/C — G-L7-1/4/C
2 G-L7-2/3/C — —
3 G-L7-3/3/C — G-L7-3/4/C
4 G-L7-4/3/C — —
6 G-L7-6/3/C G-L7-6/1N-2/C G-L7-6/4/C
10 G-L7-10/3/C G-L7-10/3N-2/C G-L7-10/4/C
16 G-L7-16/3/C G-L7-16/3N-2/C G-L7-16/4/C
20 G-L7-20/3/C G-L7-20/3N-2/C G-L7-20/4/C
25 G-L7-25/3/C G-L7-25/3N-2/C G-L7-25/4/C
32 G-L7-32/3/C G-L7-32/3N-2/C G-L7-32/4/C
40 G-L7-40/3/C G-L7-40/3N-2/C G-L7-40/4/C
50 G-L7-50/3/C G-L7-50/3N-2/C G-L7-50/4/C
63 G-L7-63/3/C G-L7-63/3N-2/C G-L7-63/4/C
D curve
In (A) 3P 3P+N 4P
2 G-L7-2/3/D G-L7-2/3N/D —
4 G-L7-4/3/D G-L7-4/3N/D —
6 G-L7-6/3/D G-L7-6/3N/D —
10 G-L7-10/3/D G-L7-10/3N/D —
16 G-L7-16/3/D G-L7-16/3N/D —
20 G-L7-20/3/D G-L7-20/3N/D —
25 G-L7-25/3/D G-L7-25/3N/D —
32 G-L7-32/3/D G-L7-32/3N/D —
40 G-L7-40/3/D G-L7-40/3N/D —
Catalog page 04 · 3P, 3P+N and 4P ordering matrix with circuit diagrams
Open original at full size ↗

Catalog page 05 · Temperature and grouping load correction

Catalog page 05 · Temperature and grouping load correction
Open original at full size ↗

Catalog page 05 · C and D curve short-circuit energy graphs

Catalog page 05 · C and D curve short-circuit energy graphs
Open original at full size ↗

Back to series selection ↑

G-L7-DC Miniature Circuit Breakers

L7-GL-FUSE CATALOG · PRINTED PAGES 01, 06

The DC chapter covers G-L7Z C-curve DC breakers in one- through four-pole configurations. The page 01 overview also shows a separate G-L7-DC40 product; select the matching model and wiring diagram.

G-L7Z DC pole configurations

G-L7Z DC pole configurations

G-L7-DC40 catalog overview

G-L7-DC40 catalog overview

DC catalog specifications · pp. 01, 06
Parameter Catalog value
G-L7Z rated-current order rows 1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50 and 63 A
Pole options in ordering table 1P, 2P, 3P and 4P
Breaking capacity and curve shown 6 kA; C curve; instantaneous trip 5–10 × In
Connection examples 250 V DC with one pole; 500 V DC with two poles as wired in the diagram; T = 4 ms
G-L7-DC40 overview (p. 01) 500/1000 V; 6, 10, 16, 20, 25, 32 and 40 A

Catalog verification. The 500/1000 V entry is for the separate DC40 overview. Use the configuration-specific diagrams on page 06 for G-L7Z polarity and series pole connection.

Catalog page 01 · G-L7-DC40 product overview

Catalog page 01 · G-L7-DC40 product overview
Open original at full size ↗

Catalog page 06 · DC product, circuit symbols and order codes

G-L7Z C-curve order codes
In (A) 1P 2P 3P 4P
1 G-L7Z-1/1/C-DC G-L7Z-1/2/C-DC G-L7Z-1/3/C-DC G-L7Z-1/4/C-DC
2 G-L7Z-2/1/C-DC G-L7Z-2/2/C-DC G-L7Z-2/3/C-DC G-L7Z-2/4/C-DC
3 G-L7Z-3/1/C-DC G-L7Z-3/2/C-DC G-L7Z-3/3/C-DC G-L7Z-3/4/C-DC
4 G-L7Z-4/1/C-DC G-L7Z-4/2/C-DC G-L7Z-4/3/C-DC G-L7Z-4/4/C-DC
6 G-L7Z-6/1/C-DC G-L7Z-6/2/C-DC G-L7Z-6/3/C-DC G-L7Z-6/4/C-DC
10 G-L7Z-10/1/C-DC G-L7Z-10/2/C-DC G-L7Z-10/3/C-DC G-L7Z-10/4/C-DC
16 G-L7Z-16/1/C-DC G-L7Z-16/2/C-DC G-L7Z-16/3/C-DC G-L7Z-16/4/C-DC
20 G-L7Z-20/1/C-DC G-L7Z-20/2/C-DC G-L7Z-20/3/C-DC G-L7Z-20/4/C-DC
25 G-L7Z-25/1/C-DC G-L7Z-25/2/C-DC G-L7Z-25/3/C-DC G-L7Z-25/4/C-DC
32 G-L7Z-32/1/C-DC G-L7Z-32/2/C-DC G-L7Z-32/3/C-DC G-L7Z-32/4/C-DC
40 G-L7Z-40/1/C-DC G-L7Z-40/2/C-DC G-L7Z-40/3/C-DC G-L7Z-40/4/C-DC
50 G-L7Z-50/1/C-DC G-L7Z-50/2/C-DC G-L7Z-50/3/C-DC G-L7Z-50/4/C-DC
63 G-L7Z-63/1/C-DC G-L7Z-63/2/C-DC G-L7Z-63/3/C-DC G-L7Z-63/4/C-DC
Catalog page 06 · DC product, circuit symbols and order codes
Open original at full size ↗

Catalog page 06 · DC polarity and series connection diagrams

Catalog page 06 · DC polarity and series connection diagrams
Open original at full size ↗

Back to series selection ↑

G-L71 1P+N Miniature Circuit Breakers

L7-GL-FUSE CATALOG · PRINTED PAGES 07–10

The G-L71 combines overload and short-circuit protection with neutral switching in one module. The catalog includes dimensions, C-curve order codes, temperature curves and separate D0 and NH fuse selectivity tables.

G-L71 1P+N miniature circuit breaker

G-L71 1P+N miniature circuit breaker

Electrical specifications · p. 07
Parameter Catalog value
Rated voltage Ue 230 V AC, 50/60 Hz
Rated current In 6–40 A
Rated breaking capacity Icn 6 kA
Trip characteristic in order table C curve
Backup fuse shown Maximum 100 A gL/gG for the condition marked >6 kA
Energy limitation class shown 3
Ambient temperature −5 to +40 °C
Case protection IP40
Endurance At least 8,000 switching operations
Mechanical data · p. 07
Parameter Catalog value
Exposed face height 45 mm
Enclosure height 80 mm
Module width 17.5 mm (1P+N)
Mounting 35 mm DIN rail
Terminal capacity 1–16 mm²
Accessories listed · p. 07
Parameter Catalog value
Auxiliary contact G-Z7-AHK
Alarm contact G-Z7-NHK
Busbar G-ZLV1V-10/… as printed

Catalog verification. Page 10 includes general B, C and D trip-curve references. Page 08 lists C-curve G-L71 ordering codes.

Catalog page 07 · Electrical, mechanical and accessory tables

Catalog page 07 · Electrical, mechanical and accessory tables
Open original at full size ↗

Catalog page 08 · Outline and mounting dimensions (mm)

Catalog page 08 · Outline and mounting dimensions (mm)
Open original at full size ↗

Catalog page 08 · 1P+N product, wiring symbol and model table

C-curve 1P+N order codes
In (A) 1P+N
6 G-L71-6/1N/C
10 G-L71-10/1N/C
16 G-L71-16/1N/C
20 G-L71-20/1N/C
25 G-L71-25/1N/C
32 G-L71-32/1N/C
40 G-L71-40/1N/C
Catalog page 08 · 1P+N product, wiring symbol and model table
Open original at full size ↗

Catalog page 09 · Load capability curves

Catalog page 09 · Load capability curves
Open original at full size ↗

Catalog page 09 · D0 fuse selectivity table

D01, D02 and D03 · gL fuse rating (A)
Breaker In (A) 16 20 25 35 50 63 80 100
6 <0.5 0.6 0.9 2.3 5.0 6.0 6.0 6.0
10 — 0.5 0.7 1.5 3.0 4.5 6.0 6.0
13 — 0.5 0.7 1.3 2.7 4.0 6.0 6.0
20 — — 0.6 1.1 2.2 3.0 5.5 6.0
16 — — 0.6 1.1 2.1 2.9 5.2 6.0
25 — — 0.5 1.0 2.0 2.7 4.8 6.0
32 — — 0.5 1.0 1.9 2.6 4.5 6.0
40 — — 0.5 0.9 1.7 2.3 4.0 6.0
Catalog page 09 · D0 fuse selectivity table
Open original at full size ↗

Catalog page 10 · NH fuse selectivity table

NH-100 · gL fuse rating (A)
Breaker In (A) 16 20 25 35 50 63 80 100
6 <0.5 0.5 0.8 2.1 4.5 5.7 6.0 6.0
10 — — 0.6 1.4 2.8 3.5 5.2 6.0
13 — — 0.6 1.3 2.5 3.1 4.9 6.0
20 — — 0.5 1.0 2.0 2.5 3.8 6.0
16 — — 0.5 0.9 1.8 2.3 3.5 6.0
25 — — 0.5 0.9 1.6 2.1 3.3 6.0
32 — — — 0.8 1.4 2.0 3.1 6.0
40 — — — 0.8 1.4 1.9 2.9 6.0
Catalog page 10 · NH fuse selectivity table
Open original at full size ↗

Catalog page 10 · Trip curves and restricted-range reference

Catalog page 10 · Trip curves and restricted-range reference
Open original at full size ↗

Back to series selection ↑

Subscribe to get exclusive updates and offers!

QUICK LINKS

PRODUCTS

CONTACT

 info@greenwich.com.cn
 +86-577-62713996
 Jinsihe Village, Liushi Town, Yueqing, Zhejiang, China
Copyright © 2024 GWIEC Electric. All rights reserved.  Supported by leadong.com    Sitemap