The 3500/33-01-00 from Bently Nevada delivers 16 independent relay channels for alarm and control applications. This 16-Channel Relay Module fits directly into a 3500 rack. Its epoxy-sealed relays ensure reliable operation in industrial environments. Additionally, you can configure each group of four channels for normally de-energized (ND) or normally energized (NE) behavior.
The 3500/33-01-00 consumes only 5.8 watts of power typically. Each relay uses a single-pole double-throw (SPDT) design. An arc suppressor rated at 250 Vrms comes installed as standard. Relay contact life reaches 10,000 cycles under rated loads.
Front panel LEDs include:
OK LED: Lights when the module works properly
TX/RX LED: Flashes during communication with other 3500 modules
CH Alarm LED: Illuminates when any relay channel enters an alarm state
Relay operation grouping:
Four groups with four channels each. Switch selection allows ND or NE per group.
For resistive DC loads, the 3500/33-01-00 handles:
Min switched current: 100 mA at 5 Vdc
Max switched current: 5 A
Max switched voltage: 125 Vdc
Max switched power: 70 W at 24 Vdc, 10 W at 48 Vdc, 9 W at 60 Vdc
For resistive AC loads:
Max switched current: 5 A
Max switched voltage: 250 Vac
Max switched power: 1200 VA
When used in failsafe or hazardous area systems, the DC limits change:
Max switched current: 5 A
Max switched voltage: 30 Vdc
Furthermore, the minimum switched load for standard silver contacts remains 100 mA at 5 Vdc. For low current gold-plated contacts, the minimum drops to 1 mA at 1 Vdc.
For gold-plated low current relays:
Min switched current: 1 mA at 1 Vdc
Max switched current: 100 mA at 48 Vdc
Specific AC limit for gold contacts:
The minimum switching current equals 1 mA. However, the maximum before damaging the gold plating sits at 5 mA.
Main module dimensions:
241 mm (H) x 24.4 mm (W) x 242 mm (D)
Weight: 0.7 kg (1.6 lb)
I/O module dimensions:
241 mm x 24.4 mm x 99.1 mm
Weight: 0.4 kg (1.0 lb)
Rack requirements:
The main module occupies one full-height front slot. Similarly, the I/O module takes one full-height rear slot.
High voltage hazard:
Field wiring may expose conductors. This creates a shock risk at high voltages. Always disconnect power before servicing.
Explosion hazard:
Do not disconnect live circuits unless the area is known to be non-hazardous. Consult the manual prior to any service work.
First, power down the 3500 rack completely. Next, insert the 3500/33-01-00 main module into a full-height front slot. Then, mount the I/O module in the corresponding rear slot. Use a switch to set ND or NE operation for each group of four channels. After wiring, verify all connections meet the contact rating limits. Finally, restore power and check the OK LED.
We ship every 3500/33-01-00 module via FedEx, UPS, or DHL. All packages include proper anti-static and mechanical protection.
3500/33-01-00 main relay module – 1 unit
I/O module (rear mount) – 1 unit
Quick start guide – 1 copy
Note: Certificates and warranty documents are not included in this package.
1. How many relay channels does the 3500/33-01-00 provide?
This 16-Channel Relay Module offers exactly 16 SPDT relay channels arranged in four groups of four.
2. Can I mix ND and NE operation on the same module?
Yes. Each group of four channels is independently switch selectable. Therefore, you can set some groups to ND and others to NE.
3. What is the typical power consumption?
The 3500/33-01-00 consumes 5.8 watts under normal operating conditions.
4. How do I know if a relay channel is in alarm?
The front panel CH Alarm LED illuminates when any relay channel enters an alarm state.
5. What happens if I exceed the minimum switched current?
Staying above the minimum ensures reliable contact operation. For standard silver contacts, use at least 100 mA at 5 Vdc. For gold-plated low current contacts, the minimum is 1 mA at 1 Vdc.
| Brand Name | Bently Nevada |
| Model No. | 3500/33-01-00 |
| Product Type | Output Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
