The Contemporary Controls EISW8-100T is an 8-port unmanaged Ethernet switch built for control panel and building automation networks. It delivers 10/100 Mbps non-blocking performance on every port with full plug-and-play operation — no IP address, no web interface, no firmware setup. Wide-range dual power inputs accept 12-48 VDC or 24 VAC, with a redundant DC input and a fault-relay output for power-supply monitoring. A rugged metal enclosure and a -40°C to +75°C operating range make it well suited to industrial and outdoor-enclosure installations.
Plug-and-Play Operation
- ›Auto-negotiation of speed (10/100) and duplex (half/full)
- ›Auto-MDIX accepts straight-through or crossover cables
- ›Store-and-forward switching, 1K MAC address table
- ›IEEE 802.3/3u/3x/1p/3az compliant
Redundant Power & Fault Monitoring
- ›Dual power inputs: 12-48 VDC or 24 VAC
- ›Two isolated DC supplies for redundancy
- ›Reverse-polarity protection on inputs
- ›Normally-open fault relay (24VDC, 1A) on power loss
Industrial Build
- ›Rugged steel enclosure with metal DIN-rail clip
- ›Compact 41 mm width — saves panel rail space
- ›Wall-mount kit included
- ›IP30 protection, -40°C to +75°C operating range
Diagnostic LEDs & Connectors
- ›P1, P2 power LEDs for redundant supply status
- ›Per-port LNK/ACT LED (green link, flashing data)
- ›Shielded RJ-45 connectors on all 8 ports
- ›Removable 6-pin power connector for fast servicing
| Specifications | |
|---|---|
| Ports | 8 × 10BASE-T/100BASE-TX, shielded RJ-45, Auto-MDIX |
| Data Rate | 10/100 Mbps, auto-negotiated |
| MAC Address Table | 1,024 entries |
| Switching Mode | Store-and-forward, non-blocking (full wire-speed) |
| IEEE Standards | 802.3, 802.3u, 802.3x, 802.1p, 802.3az |
| Power Input | 12-48 VDC (2.5 W) or 24 VAC ±10%, 47-63 Hz (4 VA) |
| Power Redundancy | Dual DC inputs, reverse-polarity protected |
| Fault Relay | NO contact, 24 VDC at 1 A max |
| Operating Temperature | -40°C to +75°C (-40°F to +167°F) |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5-95%, non-condensing |
| Protection Rating | IP30 |
| Mounting | TS-35 DIN-rail or wall (kit included) |
| Dimensions (W × D × H) | 41 × 70 × 115 mm |
| Weight | 0.66 lb (0.3 kg) |
| Enclosure | Rugged metal, with integrated DIN-rail clip |
| Wire Size (Power) | 16-22 AWG solid, 16-18 AWG stranded |
| Regulatory | UL Listed (UL 62368-1, ITE), CE, UKCA, FCC Part 15 Class A |
| UL Certification | File E530406 (Audio/Video, Information & Communication Technology Equipment) |
| UL 508A Compatibility | Acceptable component per UL 508A Supplement SA1.1 §44.1.4 when supplied by a Class 2 limited-energy source |
| Warranty | 5-year limited (Contemporary Controls) |
Frequently Asked Questions
Can the EISW8-100T be installed in a UL 508A control panel?
Yes. The EISW8-100T is UL Listed under UL 62368-1 as Information and Communication Technology Equipment (ITE). UL 508A Supplement SA1.1 §44.1.4 recognizes Listed ITE/ICT equipment as an acceptable component in UL 508A panels when supplied by a Class 2 limited-energy circuit. Powering the switch from a Listed Class 2 transformer (UL 5085-1/5085-3) or Listed Class 2 power unit (UL 1310) preserves the panel's UL 508A listing.
Does the switch require any configuration?
No. The EISW8-100T is fully unmanaged and plug-and-play. It has no IP address, no web interface, and no firmware to set up. Each port auto-negotiates speed (10/100) and duplex (half/full), and Auto-MDIX accepts either straight-through or crossover cables. Power it, plug it in, and it forwards traffic.
What power options are available?
The 6-pin removable connector accepts 12-48 VDC on the V1 input, 24 VAC on the V1 input, or DC on both V1 and V2 inputs for redundant powering. For UL 508A panel installations, a Listed Class 2 transformer is recommended. Inputs are reverse-polarity protected and the unit draws only 2.5 W on DC or 4 VA on AC.
What does the fault relay output do?
Pins 3 and 4 of the connector form a normally-open contact that is held closed while both power inputs are healthy. If either P1 or P2 power is lost, the contact opens — letting a controller, BMS, or annunciator detect the loss. The contact is rated 24 VDC at 1 A.
Is the EISW8-100T suitable for outdoor installations?
The switch has a wide -40°C to +75°C operating range, so it tolerates outdoor temperature swings. However, IP30 protection only blocks larger solid objects and provides no water resistance — so outdoor use requires installation inside a weather-rated enclosure (NEMA 4 or higher).
How is this switch different from the EISW16-100T?
The EISW16-100T offers double the ports (16 vs 8), a much larger 16K MAC address table (vs 1K), Jumbo Frame support, and per-port amber speed LEDs that distinguish 100 Mbps from 10 Mbps links. Otherwise both share the same power inputs, fault relay, temperature range, and UL listings.
- Sub-Category:
- Unmanaged Switches
