EHG3305 is a slim, entry-level unmanaged switch with 5 RJ-45 ports and strict QoS packet prioritization according to 802.1p. Designed for industrial and especially for hazardous locations, it fits into small spaces in cabinets or between walls, and complies with CE, FCC and UL standards, while featuring a robust metal housing. Redundant power inputs allow simultaneous connection to wide-range DC power sources, so in case one of the power inputs fail, the other live source automatically acts as a backup to provide power.

Switch Properties
Processing Scheme	Store-and-Forward
MAC Table Size	8k
Packet Buffer Size	1 MB
Jumbo Frame	10K Bytes

ETHERNET
Compliance	IEEE 802.3 for 10Base-T IEEE 802.3u for 100Base-T(X) IEEE 802.3ab for 1000Base-T IEEE 802.3z for 1000Base-X IEEE 802.3x for Flow Control, back pressure flow control IEEE 802.1q/p for VLAN Tagging and Class of Service IEEE 802.3az for Energy Efficient Ethernet
Auto MDI/MDI-X	Yes
Protocols	IPv4, IPv6, IGMPv1/v2/v3, IGMP Snooping,GARP,GMRP, GVRP, SNMPv1/v2c/ v3, SNMP Inform, ICMP, Telnet, SSH, DHCP Server/Relay/Client, DHCP Option 66/67/82, BootP, RARP, TFTP, NTP Server/Client, SNTP, SMTP, SMTP (Gmail), RMON, HTTP, HTTPS, Syslog, MRP (Client), LLDP, IEEE 1588 PTP V1/V2, IEEE 1588 Hardware E2E Transparent Clock, 802.1x, EAP, RADIUS, TACACS+, Mirror port, QoS, ACL, Serial Console, U-Ring, STP, RSTP, MSTP, Redundancy Compatible Ring
SNMP MIB	MIB II, IF-MIB, SNMPv2 MIB, BRIDGE-MIB, RMON MIB Group 1,2,3,9, RFC RFC 1157, RFC 1213, RFC 1215, RFC 1493, RFC 1643, RFC 1757, RFC 2011, RFC 2012, RFC 2013, RFC 2233, RFC 2571, RFC 2742, RFC 2819, RFC 2863, RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 2674

Power
Dual Input Voltage	12 - 48 VDC
Input Current	0.5 A max.
Power Consumption	6 W max.
Reverse Polarity Protection	Present
Connection	Lockable 5-pin terminal blocks for power input

Physical Characteristics
Housing	IP30 protection, SPCC, Black
Dimension (W x H x D)	Slim type, 23mm x 94mm x 72mm
Weight	TBD
Installation	DIN-Rail mounting
LED Indicators	PWR1, PWR2, Alarm, ALM, LAN

Environmental Limits
Operating Temperature	-40 to 70°C (-40°F to 158°F)
Storage Temperature	-40 to 85°C (-40°F to 185°F)
Ambient Relative Humidity	5 to 95%, 55°C (non-condensing)

Regulatory Approvals
Safety	UL/IEC(CB)61010-1, 61010-2-201
FCC(EMI)	FCC Part 15, Subpart B, Class A
CE(EMI)	EN 55032:2015/AC:2016 Class A EN 61000-3-2: 2014 EN 61000-3-3: 2013 EN 61000-6-4: 2007 + A1: 2011
CE(EMS)	EN 55024:2010 + A1: 2015 EN 61000-6-2:2005 + AC: 2005

Test	Version		Item	Value	Level	Criterion
IEC 61000-4-2	2008	ESD	Contact Discharge Air Discharge	±6KV ±8KV	3 3	B B
IEC 61000-4-3	2010	RS	80-1000MHz	10 (V/m)	3	A
IEC 61000-4-4	2012	EFT	DC Power Port LAN Port	±2.0KV ±2.0KV	3 4	B B
IEC 61000-4-5	2014	Surge	DC Power Port DC Power Port LAN Port	Line-to Line±0.5KV Line-to Earth±0.5KV Line-to Earth±2.0KV	3 3 3	B B B
IEC 61000-4-6	2013	CS	0.15-80MHz	10 Vrms	3	A
IEC 61000-4-8	2009	PFMF	Enclosure	AC 50Hz 30A/m	4	A
Noise Immunity			Simulator noise 500 Vp-p, noise width: 1 μs by noise simulator of 25 to 60 Hz in noise frequency (TBD)
RoHS			YES
MTBF			20 years (TBD)
Warranty			5 Years

Ordering information
Model name	Part Number	Enclosure	RJ45 ports
EHG3305	1P1EHG33050001G	Metal	5

Optional Accessories
Model name	Part Number	Description
SDR-75-24	50500752240001G	75W/3.2A DIN-Rail 24VDC power supply with universal 88~264VAC / 124~370VDC input

Datasheet

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	EHG3305 Datasheet EN	2025-08-27	249.51 KB
v0.5	EHG3305 Datasheet EN	2022-12-13	200.38 KB
v0.4	EHG3305 Datasheet EN	2020-11-30	246.88 KB
2 older versions

Hardware Installation Guide

VERSION	NAME	TIME	SIZE	DOWNLOAD
v1.0	EXG3X05 HARDWARE INSTALLATION GUIDE	2025-08-27	3.99 MB

Test reports

VERSION	NAME	TIME	SIZE	DOWNLOAD
	EHG3305 Declarations of Conformity	2023-03-20	282.84 KB
v1.0	EHG3305 CE_EN55032/24 test report	2020-11-30	4.44 MB
v1.0	EHG3305 CE_EN61000-6-4/6-2 test report	2020-11-30	4.26 MB
v1.0	EHG3305 FCC Compliance	2020-11-30	2.15 MB
v1.0	EHG3305 UL Authorization to apply UL mark	2020-11-30	56.83 KB
v1.0	EHG3305 UL Safety Certification Report	2020-11-30	17.60 MB
v1.0	EHG3305 UL61010-1_CB test certificate	2020-11-30	144.18 KB
v1.0	EHG3305 UL61010-1_LCC Safety CB	2020-11-30	16.27 MB